I'm working on an engine which has the CNC'd Roval Intake port and am less than impressed with the CNC'd intake portion of the head. The intake port is like the port on the chevy 502 h.p. 502ci engine. I called edelbrock tech and asked which intake gasket to use and the tech guy spec's the 7203 gasket. That particular gasket is no different in shape than a normal large ovel port gasket and sure as heck does not fit the port on the head. Chevy make's a gasket, pn 12366985 for the 502 and is a perfect fit but is extremely pricey. Anyone else run across this mismatch?