Subframes

Yes, we did it to my '69 Valiant. Read all about it here:

http://www.forabodiesonly.com/mopar/showthread.php?t=15895

We put in new front frame, parts of the rear frame, new inner rockers and all new floor pans. Very big job, not for the meek.

It was the first project like this for both of us. I now know why a rusty shell goes for $500 while a nice rust free California shell goes for $5000. The $4500 difference is well worth it!

What I mean is, it's a lot of work and probably not worth it unless you want to be busy, want to learn and want to do the work because you enjoy it and love it. Don't do it for money or because you think you're car will be worth tons of money after. It won't be. It'll never be the same as a rust free car and you'll be lucky if you finish and don't give up half way through. The price for the parts is expensive too. You can't buy the center seat perch area of the floor, you have to find a donor car for that, same with the frame I guess. We got lucky and got the center floor for $125, the front frame for $75 and one front pan for $80, the other front pan I already had.

That being said, I really enjoyed the experience, learned a million things and I would do it again, but only on a rare or high dollar car. Plentiful A-bodies probably aren't worth the trouble unless you love your car for some reason like you were born in it. :)