hello they are revolution thrust 8x17 and 9,5x17 with 225/55 and 255/50

Heya,
The intake manifold is a dual plane GM part 12366573. The carb is a 4160 Holley 600cfm and the air cleaner is 1.5" drop summit link. Clearance is minimal see clay in picture : . Don't forget that this is with a factory 74 hood! I'm sure factory hoods after 76 will not have enough clearance
Hope it helps,
Nick