BrenTuning.com !!! He's located in Auburn, MA. Tell him camborex sent U!!!! Most of the New England Subarus(NES) guys use him!!! That's just for tuning though.
Stage 2 is just a turbo-back exhaust. If U know how a wrench works u can do it in 3-4 hrs max. If U really want to get it installed tho try "Kaizentuning.com" located in Acton, MA. 10/10/10 there is going to be a SuperMeet there, If u wanna check the place out 1st.
Yea Bren is the best! Cant go wrong with BrenTuning. There are some other shops too. PSI Racing is in Auburn, and F&S Performance is in Sutton, MA. If you get PSI to do the work though, Bren can come down and dyno tune your car right after they finish the install.