Can we prove it wrong? Can you prove it correct? And the problem here ain't quite as simple as you make it out. Martyd asked a question earlier in the thread. " With a $4000 budget which would make more power an LS1 or a 351w? ." Well lets look at that question from a practical stand point. I have a 94 Mustang GT and a 98 LS1 camaro sitting in the garage right now, which two of these cars is gonna make the most power on 4 grand. Well the problem with the mustang is I don't have a 351W. Which means unless your fortunate enough to have a 351 engine fresh out of the machine shop sitting in your garage your gonna need to go buy one. More then likely your gonna need to send it out to a machine shop. By the time you get through buying the rotating assembly, HCI, new headers and new tune your way beyond 4 grand. So in this scenario the LS1 wins. The camaro needs this, and a tune. Trick Flow 515 HP GenX Top-End Engine Kits for GM LS1 So lets go to scenario 2. Lets say the mustang just happens to have a 351W sitting in it ready to go. You show me one N/A top end kit that will match the same power as the one I just showed you for the LS1.