bought my boat from a guy who "got it from his brother in NH" He wanted the trailer so was selling the boat.
got a bill of sale from the NH guy stating that it was on the property when he bought the house and never registered.
Otherwise they would have had to perform a title search.
The 4 digit serial number on mine was from the 70s so they made me new numbers. and made up the year.
done deal. no need for inspection as it was an outboard
Call the registry in falmouth(or was it hyannis?) and ask them. They were very helpful