^^^^^+1 with above.
You need to swap out the non-PI heads and then strap on your big boy paints and get prepared to do a lot of damn work.
Here is my thread on doing the swap.
http://www.svtperformance.com/forum...s-62/826230-tork-tech-terminator-install.html
I happy that I'm almost done and positive I will enjoy the result. However, I can't say I would go back and do it again.
first suggestion would be to read the forums before posting a thread that has been posted a million times before. Not being a dick, just saying a quick search will do you wonders and save you A LOT of time vs waiting for responses from other members. You unfortunitly have a nonPI motor. The 96-98GT's had non PI heads and intakes on them, in 99 ford changed the heads to PI heads and intakes, effectively making the 4.6 2v not suck(non PI heads intakes are VERY restrictive, and HORRIBLY limit the power production of the motor). Your better suited by changing the heads, cams and intake to stock 99+ PI unites(I think Latemodelresto.com makes a swap kit with all the parts you need) google it if not, I know someone does. If not you'll have a hard time breaking 300whp even with a blower. So you can go that route OR if you insist on not changing the top end then look into Vortech, Paxton, or Procharger, they are the 3 big centrifugal blower manufacturers, there is also Kennebell that makes a twin screw blower for those year motors(i think). Also, dont forget, youll need extra fuel, custom tune, clutch, etc.
i was looking through this web sight and i don't need the trickflow kit and that seems to be the only 1 available.