big block pro comp heads

I looked up those heads. Apparently they need an offset intake rocker (.400 ).Where did you get the rockers? Are they pro comp as well? The .400 offset is close to what a stage vi uses (.480) so they might be useable on the stage vi with some grinding.

Big block mopar rods are pretty cheap too! Heck the I beam is $375 and good to 1000 h.p! Anybody use em?