I just bought a set of Fenton's from chevys of the 40s for GMC 270 / 302.
I asked them about grinding and they said they were cast specifically for GMC.. I'll keep my fingers crossed.
$260 aint the end of the world, but I'll agree with most on that casting quality generally is crap, i have a buddy who is restoring a Model A Ford, he has shown me stuff with so bad quality that he's afraid to install it on the car.
If my new headers wont do the trick, i'll save up and call Clifford or build a set of my own.
