Twin Turbo on a 4.6?

[stangt00]

I found this from innovative turbo solutions:

Stage I 4.6 single kit including 62-1 Garrett turbo, 38mm external Turbo smart wastegate, Turbosmart Type II BOV, 3" DP and H-pipe connection, Large Frontmount IC, new headers piping houses connections etc..Intank Steeda dual fuel pump 42lbhr injectors 80mm Calibrated mass air sensor reburn on custom chip, installation and dyno runs. You would also need to switch to a flowthru muffler instead of a chambered style wich was included.

They want $7000 installed and dyno tuned, $1000 less if I install and tune. Thats outrageous for a turbo setup. He didnt even give me an idea what kind of power to expect. For that price, better be like 250RWHP. Guess thats out of the question. Hell, the Twin Turbo was $2000 more. Thats outrageous. I could put a crate 800Hp motor in there for the same price. Oh well.