ok so i have a set of 1.72 roller rockers on a 302 im building and im trying to find a set of valve covers that will clear the rockers and the stock EFI intake. i have a set that clears the rockers but they wont clear the intake. they would if i had a 1/2 inch spacer. but the only size spacers i can find are 3/8 or 1 inch. so any help would be great. lol and the 302 has a ford racing F303 cam in it.