Not sure I have not dynoed it. The previous owner said it put down 260 to the wheels but I havent a clue. It is considerably faster than my old 04 GT was that put down 240whp with exhaust, CAI, and plenum.
The 98 has ported PI heads, PI cams, PI intake, K&N FIPK, BBK Tbody/Plenum, UPR Catted X, and Packs.
I am going to either get a set of flowtech LTs with o/r X or bassani mid length with o/r x depending on how much I feel like spending I guess. Debating on cams too then I will get it dyno tuned and hope for 300whp.