Hey Denny, a guy I know just rebuilt one of those 410 motors and put it in a 66 T-Bird, and he put a Ford 3x2 setup on top! He was having trouble getting the carbs set up so he brought it to some guy he knows and the guy got it running "better" for him! He said the right bank seems to be running"rough" and this guy told him to get..............I`m sorry, "he needed" a set of adjustable rockers, which said guy just happens to have a set of for the mere price of $350.00 !!!!!!!!! The engine is bone stock except for some crane springswhich he put in thinking he would put a cam in it???? I told him I thought he was wasting his money and that guy was trying to hose him.