Are we talking modifications or collision repair kind of shops?
You are literally 20-30 minutes away from me (Redlands area).
Unfortunately, I don't really know any in your particular neck of the woods. I do know there are a couple in Riverside (that I haven't used), if I can find their names again, I'll post em up.
Past: 2011 3.7 6AT SG
Current: 2014 5.0 6MT Black