to keep the plates (which you MUST do under any circumstances, as it makes your 02 a zillion times cooler and that much more authentic) do what i did: register the car in cali and keep it in texas. you can give the dmv your texas address and they won't bat an eyelash. you can also renew by mail. blue or black original plates on a cali 02 just seem right, and the white ones don't.
btw my car had the blue plates when i first owned it, and when i found it again in washington state and bought it back again (after twelve years and four subsequent owners) the plates were still on it. the two wa owners never changed the registration, so i lucked out. i then drove the car back to cali and re-registered it, just getting in under the grace period before i might have been forced to switch to the awful white plates, which, imho, make an 02 look tacky.