ok i have just installed roller rockers (1.6) on my 95 GT, they are from ford racing. I thought that i would be able to fit the stock vavle covers over them, because i had rebuilt a 302 out of an 85 GT in one of my engines classes and we put the same rockers on that engine as i did on mine. When we went to put the stock valve covers on they fit over those rockers just fine so why cant i get mine to fit. It should be the same shouldnt it? Also if i cant get them to fit does that mean i need to buy thicker gaskets or a bigger vavle cover? The heads are stock and so is everything else on the motor but the rockers.