For the most part, you need to stick with '99-'01 because the tone wheel on the crankshaft is 16 teeth. '02-'04 generally has 32 teeth, however, you can find a newer one with only 16 teeth. Use car-part.com and search for different years, but make sure you look for 16 toothed tone wheel.
You may be able to add an HO, but since you can't use the HO computer you are stuck with running nothing but 93 octane.
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Last edited by QuadraTokn; 05-06-2009 at 09:17 AM.