If I go with the black FORD RACING covers that are 3 3/4" what size spacer would I need 1/2", 3/4", 1" or more. Also, I need to have a aftermarket paper breather like K/N to allow the crank to breath. Will they or will it plug into these valve covers?
Lot og question I know, but want to have everything before pulling stock motor out and putting 306 in.....
Thanks PURE VNM