yeah, its an Si engine, and pretty strong from what i hear, i got the b20a3 or whatever in mine, piece of shit, and the rings are aluminum or whatever, and with the FRM walls, its too hard for the rings, and they suck real quick, check out preludepower.com for more information, IE buildups, specs, stuff like that, there are a shitload over there boosted and everything, you'll find all your answers there