bknoxx

so the heads on my 98 are crap ? what heads are you talking about swapping them to

uberstang1

99-04 gt heads and intake manifold, performanced improved heads aka PI heads

cariacou

change the axle, you'll get more benefits and it's probably cheaper on a 1996 gt

bknoxx

ok thx man.. this is my 1st car above 74 that im making a street car out of lots to learn with this thing

uberstang1

All the mustangs gts from 79 to present have an 8.8 and pinion so price should be the same.

j-town_edge

That would be the way to go for the top end for sure. I've heard somewhere that the IM and the heads just as bolt-ons are a good 25-40hp boost, not sure if this was ever verified or not though.

uberstang1

Ive seen non pi headed 2vs with full bolt ons including long tubes and they only put down 190rwhp not sure what they put down bone stock but long tubes and bolt ons get expensive, first step would be put that money towards the headswap in my opinion.

j-town_edge

^^^ True. If you're going to spend the money, might as well go heads. Can always get the long tubes stuff later.

Stevo86

I did a PI swap on a stock and I mean bone stock 98 gt, after a tune it put down like 265 RWHP or so. So not to beat a dead horse but do the head swap, then bolt ons.

disposablehero27

Do use shorty headers. Stay stock or go long tubes.