Ok, the guy got back to me...axle center to axle center is about 124", and the bed is about 100" long overall (call it 8'), so I'm pretty certain that this truck is a 3600, correct me if I'm wrong. Guy swears that the bed is original, looks it too.
So, just to be certain, Chevrolet DID make a 3600 Fleetside in '59 (?).
Looks like this one is going to follow me home...
Thanks for everyone's help.
Chris
