Good luck on that as we always found it was a crap-shoot. I have the Cobra 1.7 roller rockers on mine but had to remove the baffle under the oil filler neck. I never had a problem with it sucking oil into the intake although I have heard some have. My cousin and I put a set of Comp Cams polymer valve covers on his but we had to place and cut the oil filler neck hole ourselves. I've heard some people have good luck using the 87-93 valve covers with no problem. However, I have also seen where they had to be clearanced to fit behind the alternator. Polished up the look really sharp. If you could find a set of 94-95 OEM Cobra valve covers you'd be in business as those cars came with roller rockers. IF you can find a set, plan to pay stupid crazy money for them though.