too mild camshaft

That camshaft is 576/582 lift with 1.5 rocker arms. Lift with
1.6 rockers is 614/621. That may be the reason Comp suggested
that camshaft. He did say he was using 1.6 TD machine rockers.
I have a Comp catalogue and just checked to be sure.Sounds like
that is going to be a strong motor.Good luck and keep us posted.