Re: o ring heads
you have to get a different HG because the multi layer HG don't work well with the oring, and we had some HG made and didn't like the quality but they were a test run anyway, it could be done but it has been proven with a flat block and flat heads the multi layer HG will hold w/ studs.
08'F250 CCSB 4x4 ALL White except whats Black!!
10' Camaro 2SS LS3 All White except whats Black!! Supercharged 682 RWHP 10.80 @ 131mph