The photo was from a forum that described it as the powertrain from the type of pictured tractor unit. Of course, the single gearstick shows that it is not probably a complete assembly, and you're right, it is now more likely to be someone's concept of how it could have been!
The two co-joined differentials had me confused, as with the inherent behaviour of Open Diffs, when power was applied to the two pinions, the rpms would have been equalised, but instead of forward torque being applied to the outer axleshafts, the middle shaft would have rotated freely in reverse! No go, Joe. This could have been rectified by one of the differentials being either a solid spool or a traction locking device, but that would have eliminated the rpm equalising. Very strange display piece, but who wouldn't love 2 V8s in sync?
