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I have an opportunity to buy a 1989 IROC Z from a co-worker that is going thru a divorce and needs to sell it (he would rather that I have it instead of the wife's new boyfreind). It has the 5.7 TPI L98 engine and is in very good condition (not showcar condition, but very good overall). Mileage...

I will be replacing my stock mufflers with the Magnaflows that many here at the CAC seem to be so pleased with. My question is about an "X" pipe that some have referenced and what exactly it does. How much difference will adding the "X" pipe make with the muffler upgrade compared to just doing...

I'm looking to free up some of the LT1's breathing and just wanted some input on what might be the better of the two approaches. An SLP "claw" or the regular K&N with an open lid? Are there any better options? I will be doing this soon, so any input will be appreciated. Thanks!!

I have read a lot about the LT4 engine and about the varying HP ranges that these motors will produce, (330-380hp) bone stock. Conversely, I have not heard much about any varience in the 300hp LT1. I was wondering if there are also some LT1's that for whatever reason had some "extra" ponies...