I thought that I would try and revive this thread by posting this beauty. We found it last winter, on a nose up against the window of the Fire Station trip. I don't know how many were built, and the only other one I remember was the Wayne Twp, IN rig that I think was on a larger version of this chassis.
1993 Spartan/Amtech Model#SP-2142
1993 Spartan/Amtech Model#SP-2142