Joe, I don't think you'll get the scorpions to fit under the stock valve covers, my FMS ones wouldn't even fit until I took a ball peen hammer to them... now they do! I run a felpro 1645 (I think that's the number) VC gasket as its much thicker than stock. You must either compress it before installing it with the stock bolts, or get longer ones. I bought longer studs from moroso but with the stud on there, the valve cover would NOT go on, so I rounded out the VC holes and how they leak. I put RTV around them and it has helped, but they still leak slowly. I ran into a guy at SSOTN named turbomike and he told me about a place that makes relatively inexpensive sheet metal VC's, you might want to look for him over there or on TM.com