It is a 53....that part I found out from the owner.I'm going to try and get back over there this weekend to do some more looking at it and see what the plate on the door jamb says. I did a little research as far as registering it. Looks like I won't be able to register it as an antique/classic since the cutoff is 1.5 tons. I read some info about drivers license requirements.Hope it doesn't require a CDL to operate on the roads.