I just found this sight. Hoping it to be a source of good info.. I am currently working on a "59 Cadalina 4 door hardtop for a customer. Trying to bring it back from the dead. So far swaped in a 403/TH350 from a 79 Trans-Am. Still need exhaust, radiator hoses that will work using the origional Poncho radiator, transmissin cooler lines, and a total rewire. The owner is going to replace the floor pans, and has already shaved the rear door handles to make it less obvious that it is a more door. It is going to be cool when done.