John, thanks for posting here! I enjoyed this thread on the Forward Look, but always pleased to see '59 content find its way here for '59 owners to enjoy.
Thanks!
Dan
John - what a setup, beats doing it by hand like I did. Now that you’ve finished the car you have a pretty nice swimming/wading pool. Enjoy.
Dick.
A few more progress pics-
Floorboard work- Not my favorite part of the job, but there were just too many pinholes and soft spots to allow the old floors to remain. I drilled out the spotwelds, and cut a clean line beyond the rust damage to reach good metal.
With a bit of chiseling and prying, the old floor was removed, leaving the reinforcements, body mounts, and outriggers. These appeared rusty, and there was quite a bit of loose dirt and silt among them, but this all cleaned up easily. The reverse electrlolysis had done its job even beneath the floor.
Note: The body is setting on a frame that will not be used, only as a jig to prevent distorting the body while doing this. Also note that one of the main body mounts was missing, it fell off when cutting the floor. Upon closer inspection, you can see that the factory had tack welded just a corner of the mount!
Here is the underpinnings all cleaned up, nearly ready for the replacement floor-
I found a '59 Chrysler sedan in the yard that had a fairly good front floor, so I cut that out, rockers and all. First was to scrape the heavy undercoating off, another chore that is not on the fun chart!
Spotwelds were then drilled out to remove the underpinnings, that I could still sell, although several pockets of rust were found that will need repair before installing the floor.
—John
This time of year, I get extremely busy, and it’s hard to find time to stay on these projects, hence my absence from this forum.
I cut out the small areas where I had found rust, cut out patches, and butt welded them in. Then it was to grinding the welds flush, and cleaning up the edges to ready for installation. After flipping the floor section over, all undercoating and grease was removed, and the areas where the floor was to meet the underbracing wire wheeled, and treated with Over-Rust [similar to POR 15].
The body support was welded back on, and the seat reinforcements were also rewelded to their supports, as the welds on them had broken.This would cause squeaking, and eventual failure of the seat supports if not corrected. The underpinnings were also metal treated after cleaning, and the floorboard was lifted in place. I used a plasma cutted to trim the existing floor, using a straightedge on both sections to avoid any large gaps. Screwdrivers worked well to align all the mounting holes, and bolts were placed in them to keep the alignment. Clamps were used to hold the firewall seam right to where it needed to be, and a few tack welds were done to hold it in place.
Passenger compartment floors are all completed, except for grinding the high spots from the welds. The rear seam is fully butt-welded. Next will be to repair the weak area in the trunk floor, and to make special Convertible only rocker panels.
John F. Again outstanding work! Having just finished by floors (and not as well as you did..and took me 6 mos. too!) I know what work it is. I used the screw driver locating trick too. But your skill is suberb!
If you ever trip over an extra passenger seat support let me know. I will add it to the trunk floor I need also from you.
John Q.
John, I’m pretty sure that I have a seat support left over from the Chrysler floor. I’ll take a look for you.‘’—John
No worries, don’t want to keep you away from the restoration work on your SF convert and your normal Big M business.I should have PM’d you instead of intruding on your thread. 
Keep up with the pictures on your restorations.
PS Michigan vs Michigan State today!
John Q.
Wish I had a chance to see the game, John, but I was busier than a one legged man in an ass kicking contest yesterday! My favorite competitive college game was always U-M, and Ohio State. My father graduated from Ohio State in the fifties, so it would always be fun to watch the game with him [as I always rooted for Michigan!]
—John
I finally got a chance to do a bit on the car. Getting the place cleaned up for the party has been an undertaking in itself!
Here are the replacement 12 gauge rocker panels. These were made with a hydraulic metal brake, as the gauge of the steel was a bit too thick to use a mechanical brake.
To get the dimensions of these parts correct, I cut a cross section from an undamaged rocker panel from another Mopar. You can visually see the difference in what was specified for a convertible versus a coupe or sedan.
John, Super Job on the fabing the Convert Rockers! Very Complex series of breaks to do and it came out OEM quality! Especially for someone your age!!! (Well, you are almost 50!) 
Now I know where to go to get these rockers should there be a need on my next convertible project or even to beef up a rusty Hard Top car.
John Q.
Trying to find time to work on this project has been next to impossible, the temps in the barn have been under fifty degrees, and playing with cold steel does not work well without taking time to warm up occasionally.
I have been working on getting a '56 Thunderbird that I found in a backyard ready to drive, and am also starting to mic out engine parts for my wife’s '69 Hurst/Olds that I am getting ready to build.
I hate the short cold days of winter, and will be glad to see it gone.
—John
John, it was -5 here last night… if I had a 50 degree day (and we do) I would be out in the garage in shorts and t-shirt. I have resorted to a propane heater out there which does take the sting out of the cold. Big advantage I have is the lack or low humidity out here in Colorado, which makes the low temps tolerable to my fragile 55 year old shell of a man! 
John Q.
OPPS, John, didn’t mean to intrude on your thread. Thought I was starting a new one. Does anybody know how to transfer this to a new thread.
Dick.
MISTER KOCH!
This is AWESOME news! ANOTHER convertible gets a second chance! And joins this List!
I’ll keep my comments brief, since this needs to be a new thread.
Before you have it shipped east, think about what you might need from Big M..save on shipping
Congratulations on your purchase, Dick!
That convertible looks quite good, the one i had been told about near Angels camp was supposed to be quite poor, maybe this was a different car?
—John
Nice car! It is in pretty good shape.
From what i can see:
No dash pad in it, std steering wheel, normal rear view mirror.
Had a normal mirror on the left side, bumper wings! (John Q can learn from that), Sport Fury medallions on it, Sport deck.
Cant wait to see more pics of it