I have a 1985 GT with stock (standard bore) bottom end and GT40p heads with standard issue valves. The cam is an E-303 installed straight up. It has the original "Powered by Ford" finned aluminum valve covers. In the future I am thinking about installing the 1.7 roller rockers and want to know if they will clear the valve covers? Also, has anyone installed the 1.7's on the exhaust and 1.6's on the intake?