[Ron61]

What I did was go to Felpro and they make a laminated extra thick valve cover gasket that gave me plenty of room for my roller rockers and no leaks. I guess it would depend on just how tall your covers are to start with. I had the normal finned Cobra type. Also check that the baffles inside the valve covers aren't going to be a problem. And I do believe that you can get a 1/2 inch space from Cobra Restorers now to add under the valve covers, but you have to watch to see that it doesn't cause a hood clearance problem.

Ron