A customer of Defined Autoworks(Devin), has a 3.0 camry swapped MR2. Adventually, he put on the TRD blower. I know he got a hell of a deal on it, but his friend had it, and had no use for it. I think Devin said he had about 500 bucks in it. Devin told me you pretty much had to get lucky and find one, as they are extremly rare and hard to get your hand on one.
As for how the bolt on, yes it replaces the UIM. 4 bolts, easy install.
Jackson