Since you are in commiefornia, you have to have the exact factory carb or it will fail the visual. rebuilding the Mikuni carb is not one a first time rebuilder should try - it is a nightmare to work on. Mike Warme knows of a carb rebuilder he uses since he is in California - check with him on where to send it to. The anti-tamper covers should pop off the screws, but then at the age of these trucks, they just might break. I can't believe they would sell you a non california carb- that is not good. also try Allstate carb for a rebuilt carb to match your vehicle.