Dear Wild;
Why not look for a 292", 700R4 and the 3.9. Now you the have the 'foundation' to "build the house". The other stuff can come later.
A 63 Bell Air weighs 4000# & will need more than a 230 will do with all the mods etc.
The 292" has more HP & torque than the 283/327 that came in that car from GM.
You could do the 'rear end' first & work forward.
Good luck, John M.......
