Cool project. I have pretty much completed work on a 48 Plymouth 2 door sedan and have logged about 4000 miles on it so far. I used a 8 3/4 from a 65 C body and welded on a 91 S10 front stub. It is powered by a 383 and a truck 4 speed... I built it from parts I had laying around to keep costs down. It is a rusty rat rod but a joy to drive. Your car is in much better shape than mine when I started. I recommend the s10 front end as it has good disk brakes and power steering and is the correct width, you have to run a rear sump oil pan. I used a steering column from a 74 dodge truck and kept the original pedals by running a rod through the original master cylinder to a modern one bolted on behind it. I hope you have as much fun as I did on your build.
P.S. I bought lots of rubber stuff from Andy Bernbaum and everything they sent me worked great