Great to hear people in their 20s are still getting hooked on the BBs sound.
As for the plate. Great idea.
A few off the top of my head.
GOODVBE... Good Vibrations, the VW sound, Same year as your car (1966).
PTSOUND... Pet Sounds,1966 again, Also relates to VW noise.
BWISGOD.. Brian Wilson is God.
FK4MULA... F**K The Formula.
BWISTA... Brianista
BBSOUND...Beach Boy sound
BBNUT...
Hope they help