As many of you have noticed I am asking lotsa BBF questions. I have a fox with a vortech renegade build and am sick of the upkeep and need to educate myself on this stuff so please bare with me for a few months. ANYWAYS I see good power from both srock and TFS A460 style stuff. Why should go one way or another as the price of the heads seam the same and I won't be porting this stuff to start. I am going to build this next year a 545 11.5.1 streeet terror. Just need some guideance as right now I am leaning heavy towards the A style but not sure if p51 that I cannot find anywhere will get me to my 800hp goal.