Stock GT's tend to dyno in the neighborhood of 230 rwhp with a 5-speed.
If you do a search on corral.net, there is alot of discussion and dyno results there on the various upper intake plenums made for 2V's (Accufab, C&L, Trick Flow, Dragon, etc.). They seem to be a good bang for the buck mod.
As for underdrive pullies, they are definitely high up there on the bang for the buck list and from what I have seen they do give you the gains they claim.
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Strike down the unroadworthy!
2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more
'94 Rio Red Cobra: All the bolt-ons, 3.73s
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