seriously, I've been looking at the F series engines, and the only 400 HP F series engine I've found was Bisi's NA F22 thats running a huge compression, really expensive head work, and race gas. I really wanna know who has an F series with 400+. I understand that there isnt a lot of ppl working on these engines, but when I hear "it's good up to 400+" I wonder how do they know? (I understand the concept of forged goodys, last sent. was a rhetorical question). can someone send me a private message to where to find one of these cars.