Good morning Dan,
What is your goal? Is it to Hot Rod the car or to return it to it's original condition, including the original drive train? What frame parts have been damaged by the previous owners attempts to modify the frame? Are you interested in replacing those frame members?
Where did you get the car? Does it have any sentimental value? Is it a 2 door or 4 door?
I am including a link to a post I made a couple of weeks ago on Chevy Chat. The post will also give you complete access to my Photobucket account so you can see projects I have assisted with as a member of Chevy Chat, including work I have done on my car this winter. This winter I switched frames and did body work to the driver's side cowl and rocker panel.
Parting out 41 body The Photobucket pictures show a body that I recently purchased for $400. It came with two complete chassis including engines which I will
all part out. The body has been sand blasted and primed, except for the interior floor. In my assessment the body is not repairable and I am hoping that is not the case with yours. When the bottoms of all the door posts have been rusted off (like mine in the picture)
Most of the structural integrity of the body has been lost. In 99% of the time it would take too much money and time to rebuild the body.
Most likely, the only place you will find door posts is off of another body. To replace them would be a job for a real meticulous, and experienced body person. To get them perfectly fabricated back on the body a lot of body parts must be aligned to the posts correctly for a good fit. An 1/8th or 1/4 of an inch off could mean a door wouldn't close properly?
It took me 4 months to replace my rocker panels, cowl, and part of the front floor on my passenger side 4 years ago. I averaged about 4 hours a day in work. The parts cost me $1000, the man to do the welding $200. I would add atleast another $300 for miscellaneous supplies. The only work I didn't do myself was the welding.
My concern is that your project could be not worth your time and effort and the money needed could be well over $20,000 doing most of the work yourself. Might you be better off spending around $3,000 to $4,000 on a drivable fixer upper that would require restoration, but could be driven while you do most of it yourself? Imagine being able to restore the car one mechanical system at a time and driving it between your restoration projects?
I buy a lot of my car parts from ebay or craigslist. This will be the first summer I have not been able to drive my car because of the work I am doing on it. I have had the car 10 years so have got a lot of pleasure already out of it. The body needs to be painted, but I think I am the coolest guy in town driving my car around without a fancy paint job!!! I have fallen in love with my car, but it didn't happen over night. Have you too soon fallen in love with yours?
Best Wishes, Mike