Yes, California is an interesting place. In order to drive a commercial vehicle in this state no matter where you are from, you darn well better be properly licensed to drive said vehicle. So a deuce in California technically requires a Class B commercial. It is entirely possible that you could get away with making it all the way through without ever having a problem. And I personally would take my chances and NOT enter open truck scales even though supposedly you are required to. But my reason being, that I am not hauling anything commercially, I am driving what is obviously an old military vehicle, there is no reason whatsoever for them to inspect it. If they see me go by on the freeway and they decided to chase me down and pull me over, then so beit. We'll have an incident at that point, otherwise there is no point in me purposefully putting myself under their microscope by pulling into open scales.
Tell ya what......... What you need to do, is come down I-5, then just north of Dunsmuir truck scales there is Highway 89 that takes off to the east. If you go that way and then take highway 36 over to 395 through Susanville CA, then 395 south to Reno, you won't ever even have to pass any truck scales. Then you would only be dealing with taking your chances with the commercial cops being set up on the side of the road inspecting trucks somewhere which doesn't happen too incredibly often on that route. I live not far from Susanville and have dodged the Dunsmuir scales MANY times going that way. When you come into California on I-5 you will have to stop at the bug check station by the border, but they are not going to give a crap what license you have. So then if you bypass the Dunsmuir scales and go on Highway 89 like I said, you are just about guaranteed to make it to Nevada without any issues. That is totally how I would do it. And if you do have issues, maybe there is a slight chance I might be free to come give some assistance. ha ha I was just in Reno twice within the past week.