I don't have a 3.0L but this sounds like a great opportunity, there is definitely a market for this sort of thing. The questions I would have are:

-Who is the manufacturer?
-What type of supercharger is it? (roots, centrifugal, screw type?)
-How much boost does it run?
-What kind of power can you expect?
-Do you need an intercooler? Is one available?
-When you say "everything" is included, what does that mean? New injectors? Additional injector?
-Does it need an oil source from the motor or is it sealed?

Harry Wagner
Harry Situations
4x4Wire's Toyota Section