I'm looking into buying a powder coated frame. It is painted over the frame numbers. I know the person who owns it and it is legit. My question is, when I put my motor in it, are the numbers on my cases enough? Can I use the case numbers for registration? What if it's not registered and I get stopped? I plan on getting a written bill of sale, even though there are no numbers to write down. I want the frame but only if it can be done without any question. Please, facts only, don't want to risk my bike on opinions! Thanks in advance for any info. you can provide.