Bought a car out of NY in the 90's and it didn't have title, only the registration. Seems like several states didn't use titles on cars made early 70 and later.
Not sure if RI used titles or registrations on the older cars but if that is what they have it should be no problem.
It use to be the police had to inspect the car once you get in back here.
I stopped at the Greenfield Police Dept on the way thru town with car still on the trailer. Was able to go to BMV and get title with no problem.
make sure you have bill of sale, and yes notorized would be good