Thanks for all the info guys. Think it will be Stage V. Will probably get package from Tim @ FHO for this mod. He sell air filter to fit this as well. Just need to find a good cam.

Ray Barton sell a flat tappet mech cam package(cam, springs,retainers lifters etc for $1000) a supposed 100hp increase
Tim at FHO says he would use a mech roller in the 630" range for a streetable hp increase.

Anyoone have any feedback on these 2 choices

I posted here because it said it was race only and Engine Tech