I believe headers will void your warranty and eliminate 2 cat's. If that is cool with you then go for it otherwise do the y and catback.

Big HP gains with just y. I think someone just dyno'd it with 10+hp gain..

joshua_drew@hotmail.com
AIM "nerdsalot2"
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1998.5 Black Contour SVT
1998 ZJ Limited 4.0L AWD