Spacer seems good but now I'm waiting for longer studs before I can try it to solve heatsink problems on my Chevy 51 truck. If you use thick spacers, forget about it and order longer cleats. The bobby pins that come with the kit may work if you use thin paper spacers. I have a sbc 350 with a 1406 Edelbrook carburetor. First Edelbrook fault I've encountered so far. By price. The studs should be longer.