Anyone have any experience or knowledge of the Comp Cams Shaft Rocker Arms for Indy 440-1 (Or Indy 440-C) heads? Generic pics make them look awfully similar to T&D.

Reason i ask, I run large diameter valve springs in a pulling truck, with Indy 440-C heads (makes Jesel outta question), and am leary of grinding on T&D rocker arms after spending the $.

Your thoughts?