Any leads in the LA, OC, SB counties? I have one recommendation for Subie Specialties, but need others also. Thanks.

Try the local forums (SCIC). ....you'll find your answers in there.

Harman Motive or maybe Aeroism

Suby Specialties. There, that's two recommendations. :D

AMSPower.com is a newcomer with a good reputation so far.

Aerosim Research can do stuff (Costa Mesa).

Garage Tuning in Irvine.

Norm Reeves Subaru in Temecula is probably one of the very few dealers i'd recommend.

For San Bernardino County (IE Area) there's pretty much nothing... :(