Great looking T-Bird you have, Chris. Someone has really taken care of that one!!!! Many of the external parts for the 460 are interchangeable with the 429, intake manifold, distributor, etc. The heads are also, but the 429 of that vintage probably allready has some very good heads on it. If the casting number on them is DOVE, they are about the best factory head made. Lots of 429/460 folks here on CHR, I'm sure they will be along to offer some advice. Welcome to CHR, hope you enjoy your time here.