Performance parts for a 65 Riviera?

[65BB]

Are there any performance parts for these? Its a '65 with a 401 4bbl, thinking of headers, c/w 3 chamber flowmaters, then an aluminum intake and carb. Thoughts, ideas, sources?

Also, what kind of trans and rearend do these have, a turbo 400 with a 12 bolt?

Thanks in advance!

[DoubleZeroEnGuage]

Two best places for buick parts is Poston
(334)368-8577 Or TA Performance (480)922-6807 or www.taperformance.com. Personally, I've had good experience with both of them.