To be quite honest with you...I put a 2000 UIM on my 1995 including a ported SVT TB. I really couldn't tell the difference and I paid like $500 for all the parts. It's cheaper just to buy nitrous. At least with that your car will be capable of running 14's even high 13's if it's running well and you're a good driver.
Other than that...get a supercharger or turbo. Don't waste your money trying to gain 10 HP.
Oh...and your gaskets will work for the SVT UIM.