I picked up a fun family four door and I am looking at redoing the engine. Where is the best place to get parts for a 1967 429. And how hard would it be to swap the 429 and replace it with a 472? I see more part and performance available for the 472.

Thank you

Check this link they are Cadillac engine specialist.

http://www.mtscadparts.com/

Al Betker, the original owner of MTS had a 500 in a 56 Fleetwood that was featured in his catalog a few years back.