S197GT07

500hp=425rwhp is pretty simple with any forced induction. The whipple or KB options would be overkill for what you want.

Look into the centris at all? They are far cheaper than the twinscrews, and will meet your goals. Just throwing out ideas for ya.

Roush05

I'm still researching, which ones are centrifugal? vortech is one I think.

edit: Vortech's site has kits for almost 6k :/

S197GT07

You can pick some up for like 3.5K

Vortech, Paxton, Procharger, are the usual suspects.

AlloySixxer

Artistic Tint & Detail in Marietta. Get some Sungard shadow.

Roush05

Well if you see a good deal on one, please let me know! Thanks for all the help.
I'll look into them if I am in the area. As of now, it's about 3 hours away from me. Thanks for the help though.

edit: looking at the systems you mentioned, a couple different ones have about $1000 difference in price, but the cheaper one says "4.6L Mustang GT, Tuner Kit with Air/Air Charge Cooler (Tuner kits do not include fuel management upgrade or programming)"

What does this mean? Does that imply that the more expensive package includes tuning?

S197GT07

PMed

we're no longer talking about $700 mods here