Hi, Car looks super. I would call Chuck at
www.bestmachineracing.com and run things by him. He can help you out. If you need a set of 906 I have a set from a 71. I decided to go with indy 440-1 heads and Chuck at best machine built it. Have another 3-4 weeks getting the wiring and fuel injection set, before firing it up. If you contact Chuck tell him Jim G sent you. He and Pete are the owners and know how to do things right. Any other help let me know. Jim