I saw this today

Plymouth 65 said
That's what I have, it's a 2 seater! They used to put the salesman samples in the trunk when they used to do door to door sales! 65'

I got ahold of Jeremy and he sent me some photos. The drivetrain came from a 360 Dakota. Even use the dash and the steering column. When the check engine light comes on he gets his scan tool out and diagnosis the problem.