Yes the Dragon Wagon did transport the Pershing. In '45 the m15 trailer was strenghted and then redesignated the m15a1 to handle the heavier Pershings. funny thing is the M26 tractor also got a face lift and was redesigned with soft skin cab in a vain attempt to lower the weight of the cab, tire wear was a issue with the M26 tractor. So if you load a Pershing, you might want to convert the cab, though the armoured cab is fine seeing it was in use till the end of WW2. By Korea all the armoured cabs had been refit with the soft skin cabs. search the porum you might find a couple of pics for the M15a1 trailer. there was one in vietnam here awhile ago. good hunting stug