I hope that dude above a few posts isn't talking about AM Racing in Chula Vista! Those motherfuckers! When you have an hour, I'll tell you how they fucked me and make shitty products.
Alan Fox has been highly reccomended by a few people. In alpine. I hear he's not the fastest, but he does it right the first time. I've heard SOME good talk about Alba in Poway. Scribbs are dumbfucks. Duncan in Santte/El Cajon if you have the cash.
What do you need done?
If you ride sand, you should check out GlamisDunes.com. Most on there are from SD or close by. Lots of reccomendations there.