Is that a Honda Trail 90? I had a Trail 55 circa about 1963. Bought it for a hunski at Pomona one drunk afternoon when the swap was winding down. rode it around the swap with security chasing me on their scooters. had 2 rear sprockets and a 4" piece of chain under the seat for the larger granny gear. cool little ride.
If they still made pontiac I would turf quick but they dont and
pontiac did make a few nice cars. It is a piece of americana history now.
I think you should save it, and really really good deal on the boxes and the sand blasting cab.