I am after one or two USA Trains 44 tonners (not the Bachmann 1:20.3 scale diesel).
I would even consider just the motor blocks (approx 67mm (2.64") between the axles) as long as they are excellent working order.
Mike you might want to consider using usa s4 or nw2 trucks. 44 tonners are bringing outrageous money on eBay if you can find one. Usa trains told me parts or trucks are no longer available. Trucks on a aristocraft center cab switcher are another option but they look toy like and again hard to find.
Mike pm sent.