My 56 tow truck and 57 fire engine will both run 65 mph all day long. The fire engine weighs 14,200 pounds empty. Your 55 with a roll back body and the Jeep on top will weigh about the same. The Airstream might slow things down a bit and you'll slow down on hills, but it can be done. Both trucks have V8 engines (350 sbc in TT and 322 in FE).
Mike B
i swapped a 2005 GM LQ4 6.0L with an NV4500 5spd into my jeep a few years back, the '55 should be even easier to do. but once i swap out everything but the frame and sheet metal, i'm kinda with the guys who say not too.
so obviously the cab is just a '55 cab, i can find that in good shape. but i have NEVER seen a big bolt front clip in good shape for sale. if someone could point me to one, i'd probably buy it today.
