I have a buddy who has a F2 ProCharger he bought for his 454 but now is going through a divorce and needs some $$. There's no intercooler with it, just the piping and big block brackets. My plan is to build a 415 or 421 this winter and throw a ProCharger on it but I was looking at F1's until this deal came up. He said $1000 and it's mine. If it will work in my situation I will jump on it. If not I'll go back to looking at F1's. I'm not looking for an all our race car. I would still like some street manors. 8 psi maybe?