Should be a piece of cake in that car. Just gather all the original clutch pedals, bellhousing etc. then go find a good T-5. You should have enough room in that car for the Camaro T-5 (close ratio and stout, shifter at the rear). Most of us truck guys want the S-10 T-5 to make for a better fit in the old GM cabs. Read all the T-5 stuff in the tech section. Start searching Ebay for T-5s as well as local bone yards.

It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed