I tried those rocker rollers. Go with comp cam please. Those are cheap junk in my opinion. I built a 340 ta pump gas motor. Getting 600 hp on an .080 over sleeved block. 426 ci monster. Good luck with your build guy-
what do you think of the hughes roller rockers ? i have them in my 426 stroker and so far no problems , of course ionly have 550 hp and keep the revs under 6500 , no going to 9000 rpm like your build