Newbie from Michigan!

Welcome to the FABO family, pauly.
As for the sheet metal, i am not aware of anyone reproducing these parts yet.
Maybe check out AMD and i think they will be reproducing the door skins soon.
It shouldn't be too hard to find good original parts though.
As for the big block swap, there is a section on here for that with a lot of good info, or go to bigblockdart.com
How about some pics?