i am not trying to diss xat or anything, but from what i hear they do alright swaps and the basic bolt-ons. but there draws the line. when it comes to technical problems or trouble shooting they call other shops in the near area for help. i would say go to a shop where the mechanics KNOW their shit. also i agree, i have yet to see/hear of a sr come out of their bay with some real power.
again i am not out to put anyone down, just put in my .02.
some other shops to look into are of coarse SS and Hybrid performance