So with a bit more digging, it looks like its a BG225 tractor with a Carlson EZ-screed III screed on the back, called the folks over at Carlson and got to talk to a field engineer, dug up the serial tag and it seems this 8' screed on a Barber Greene paver started as a 10' screed on a Road-tec paver so a few parts got changed out. Seems its a big generator run heater with an oil loop that heats the extensions. It certainly needs some TLC, loose wires and such. The tractor has a John Deere 4 cyl non turbo, the B model would have had a cat. I will say finding the clutch on the engine makes starting the engine a whole lot easier.