Dear Luckydog827,
I had a local Ford SVT Dealer install my Saleen Supercharger on my 2005 GT early last year...
Paid just under $1000.00 for the install but I know its done right...
And they warrantied it too...
Expect to pay for a good CAI, SCT tuner and JDM tune before you finish because the Saleen tune is crappy!!!
Dave
P.S. Stock hood works...