In the market for a low profile air cleaner. 68 Base, 327. Added a holley carb with a spacer because it is a spread bore. Bought a 2.5" tall oval air cleaner from Holley, still not enough hood clearance. There is a 1/2" lip on the base that I can shave, but still not enough. I know I'm not the only one with this issue. What is everyone using?