Uhhh.. Your Driveway? Gauge installs are really not that hard. If you have basic tools, a drill, a couple of wrenches, and somme electrical experience, you can do it in no time. Took me a little under an hour to tap and thread the intake manifold, exhaust manifold, and to run the transmission and water temp senders.
Aside from that, don't know. I know 4 Wheel performance does good work, but I don't know if they have any stores in the LA metro area.
Good luck.