although Biff thinks that I know little about the 2.3 doesn't make that statement true, just as his statement about the size of an engine. Allison made a V24 and bigger. The 2.3 in the turbo configuration is a very good engine, that being said, when you run a real 20 psi on that engine you cut the "very good" down a bunch. It's true that I never paid much attention to a 4 cylinder but the basic math still applies. There's a reason you don't see a AA/FD with a 4 cylinder in it. HP. I'm sure any of the 2.3 turbo guy's out there have been beat by a stock GT and saying they have not makes it a little easier to swallow but not necessarily true.