I have a set of EQ aftermarket stock replacement heads with only 5k on them since purchased. These heads are a little better then gm heads they do have a thicker deck surface and screw in studs. I do have the stock rockers they are like new also. These heads are right around $325 a piece new. I am looking to get $450 out of them. I am in mason ohio 20 miles north of cincinnati. I can ship them for around 40 to 60 depending on were you are at.