Rocker arms for 408 build

You are correct, factory bolt and fulcrum are stronger than a stud unless you put a girdle on it. Read my post from this summer, been running mag stuff for awhile,weak link on factory stuff Is the pushrods assuming 530ish lift-300lb open spring, mid 6,s rpm they are the first thing to go. Obviously lobe profile has a lot to do with this also. I think you'll be just fine with factory stuff. I have used those adj pushrods many times on sft motors, they work fine. If you want some reading on this stuff go to mopar chat circle track, guys there have been running this stuff for years because of class rules.