Thanks very much for all your input folks.
@Vovchandr it has a title, and is a 2013 build. It also has an OBD2 port though I’m not sure exactly what the computer would read out.
So in summary, there are indeed (at least) two paths-
1. Attempt to register it at a “local” DMV just as one would a regular vehicle.
Potential downside being difficulty with inspection.
2. Go through the Specialty/Homebuilt vehicle division of DMV which appears to be a bit of a headache upfront, but no future concern with inspections.
I’m generally one to defer gratification, so I may very well just go directly to option 2.
That said, I’m happy to have somebody talk me out of that, or suggest another alternative.
Either way thanks again to those who’ve chimed in so far.