[jhv48]

Black 427. You can try to slip it by California DMV and hope they don’t catch you for committing fraud by registering your car as a 1965 vehicle in order to reduce your taxes and registration fees. Doesn’t matter how the car was registered in another State if the description is incorrect. (Your vehicle wasn’t really constructed in 1965). If you don’t drive it much, you might not get caught. And registering it as a 1965 vehicle with your insurance company won’t cause any problems unless you’re involved in an accident and a savvy claims adjuster notices the fraud. Then things can get sticky from there.
Why not avoid the problems in the first place and just register the car properly? It will cost a bit more but then you won’t have to worry every time you see a CHP checking out your car. Then enjoy driving it with a clear conscience.