The 01-02 autos I wasn't sure about, thanks for clearing that up.Smokem said:1998-2000 automatic 215hp - 420lb/ft
2001-2002 automatic 235hp - 460lb/ft
1998-2002 5spd 235hp - 460lb/ft
1999-2000 6spd 235hp - 460lb/ft
2001-2002 6spd 245hp - 505lb/ft
The pistons are different between the HO and SO motors. The turbo on the HO is wastegated to 26psi vs the SO at 21psi. The HO motors have press in valve seats and the SO motors do not. The HO has higher fuel pressure than the SO, but the injectors are smaller 600cc's at 100 bar for 30seconds vs 640cc's at 100 bar for 30seconds. And the HO motors have a larger flywheel than the SO motors, 330mm vs 310mm. The difference in the piston bowls allows for the HO injector to spray out of the bowl much easier with less fueling modules than the SO piston bowl. Sorry for the delayed response, I've been crazy busy, does this answer your question?TOYZILLA383 said:where is the difference? piston, head gsk, block, head?