Love your work! The only addition Id make to your plan for the truck, if I may, GM used a cast aluminum distributor cover on the corvettes from the same year instead of the grey plastic one common to the f-bodies. It doesn't sound like much but side by side they make a difference.
Heres Dads 55 in 1969 with him upon returning from Kansas (drove the car from Syracuse NY to Pittsburg KS for college) And; again after a 30yr hiatus.
Its a 2 piece frame, factory V8 3spd OD car. He put a 307 in it to go to college and a '65 327/365hp and 65 Muncie M21 in it (both out of the same 'vette)