I'm Craig Meyer with Ridetech. I'll be hanging around here pretty regularly to help out with any questions you might have. I'm also probably gonna be pestering some of you with questions for my own build too. I've been working on a 61 Impala 4 door for a couple years now. Still has a way to go before it's road ready, but it will get there eventually. Thanks!
The body on the car is pretty solid. It has a few minor issues, but nothing that can't be easily patched. The worst part is the rear floor pans. those are gone and need to be replaced,(car was parked outside with the windows down for a while). The main plan is to just get it cleaned up and driveable then have fun with it. I'm waiting till I can score a 61 2 door or convertible to really invest money in one of these . It has the 283 v8 with a manual 3spd with the pull cable overdrive. The one thing i'm struggling with is finding a decent deal on a set of front and rear splash pans and the vent window regulators. Those items were already robbed from this car when I got it. Probably explains the killer price I paid for it
Just to be safe (and ease my consciences) I would consider an extra floor brace taking your rear front seat stud (bolt) and reinforcing the floor pan with a cross brace that runs from door channel to door channel. That should keep any stress from being transferred to a rusty floor pan (don't want you falling out from inside the car.
You are aware how rare that Borg-Warner auxiliary OD transmission bolted to the back of your PowerGlide is, I hope. It is just about worth it's weight in gold. I believe it can even be adapted to work with a TH350 once you get a better project car.
Oh, the floor pans are in need of much more than a brace at this point. It's Flintstone style right now so they are going to be totally replaced. Yeah I hear those overdrive units are pretty rare. Never thought of using it with a TH350 if that will work it's a neat idea.
Seriously if you where to drive around as it is the floor boards could buckle as they need to be complete from front to rear and they rely upon the compound curves of the floor pan for it's strength. With the rear foot wells and seat platform missing the front seat could rotate about the bolt down point of the front seat at the back trying to dump you out the hole behind you as the car accelerates (transferring weight to the rear which isn't supported).