A good shop in So.Cal

Okay so I have looked around town (Vegas) and I am coming to grips with the fact that if I dont have a honda, most places cant help me :)

What is a good Nissan/Infiniti shop in the San Diego area or the L.A. area for that matter? Sites, Phone Numbers, Directions anything is helpful.

EDIT: Just to clarify I need a Performance Shop! Not a Mechanic shop!

well, what are you looking out to install. I know a lot of great shops in LA

Your basic stuff...

Exhaust work (install Muffler Etc...)
Engine Work (advance my timing, SWAP, re-wiring lights)
Body Work (paint my bottom black strip, install Body Kits and paint)
Suspension (Install springs etc..)

I am not at all good with cars and would rather have it done right, then to me screw something up :)