Ronin5.0

Im currently in the process of gasket matching my cobra manifold, but on the lower part where the manifold matches up the the heads there is a TON of material that needs to be taken out to match up with the gaskets. Currently my heads are stock, and i have yet to see how bigh the port openings are on them, but on the LIM i need to take a good 1/8 inch off three sides of the port to make it match the gasket! will that be too much? thanks!

alan94

i own a 94 gt with cobra upper and lower, the previous owner had this done to the lower, he left the ports on the lower slightlysmallerthan the ports on the heads, and nothing leaks