Talk to Duane Porter of Porter Racing Heads. He has spec'd out the last 5 cams I have bought and I have been well pleased. He is a Comp dealer. I am running his flat tappet solid in my 528 Hemi and it is a great street cam. I had it nitrided and got the EDM lifters, have put over 7K miles on it with no problems. It specs out around 266@ 50, .596 lift on 110 CL. Duane posts on here.