Dark_5.0 - The Saleen blower is only for 2V's. 96-98 is $3600, 99+ is $3239.
The Series II Supercharger Kit includes the Saleen Series II Blower (Eaton M90S roots,) Intercooler, Heat Exchanger, Intake and all hardware (like injectors, etc.)
The Saleen blower won't make the huge power #'s like the centrifugal superchargers, but it makes a great setup for a dialy driver. Of course, low end is improved substantially, and increased maintenance is basically a none issue. 360HP will put you well past most most cars in terms of power and accelleration.
And if down the road 360HP isn't enough for your daily driver, you could always add a 90mm MAF from a Lightning and the biggest TB you can fit on there (you want as little restriction on the intake side of a Roots blower as possible) and release some more hp. Later you can add a better fuel system, exhaust, turn up the boost a little, and get a dyno tune and probably eek out another, what, 40-50hp+.
But remember, it won't make near as much power as a centrifugal blower with the same exhaust/fuel system mods, I just wanted to make sure you know you could upgrade it if need. But the main focus of a Roots blower is reliablity and ease of maintence.
Saleen Blower for '01GT