Valve Covers

I have those, but I'm using a 1/2" phenolic spacer and TW heads (which raise the valve cover height by 3/8"). They fit, but you won't be able to get a breather in the opening on the driver's side b/c of the plenum. I was able to put an oil fill plug there. Also, there's one or two protrusions on the inside that will need ground down. However, I'm running 1.72 RR's and I cleared the baffles. Hope that helps.