His 4310 tractor might need the same exhaust stack as I had put on my JD4200. You had to cut a half circle out of the side of the hood. The exhaust on my machine was fixed and stayed on while you lifted the hood. It wasn't a two peice exhaust like you and I now have on our 3720 cab tractors.
However, even if it is the same as what I had on my JD4200, I still loved it much more than the low exhaust. Especially since I added a Jodale Perry Cab to that tractor, the fumes on the low exhaust always crept up and into the cab, (of course it wasn't a preasurized cab like we have now) but it was very dangerous and smelly. I highly recommend the verticals.