I'll bet that A/C stuff might be hard to find, but I don't know. I know you could go all the way up to 440/4 barrel in 1970 with A/C as an option (They are rare). Don't know about 71, since the 440/4 was discontined in 71, but I think there are 71 A/C 383's out there. Good start to a Hemi clone, as I don't think project 318's are worth restoring unless maybe they are Gran Coupes or convertibles. If it were mine, I'd sell parts off it and then sell the body, but I am not into major projects- maybe when I retire.
Charles