PTO comes in almost an infinite number of variations. I have worked with a lot of PTO's mostly eight bolt, single speed, direct mount, air shift. Dave knows the older unit for our Old Bolts pretty well but you can't expect anyone to know every odd ball unit ever made. I once built a helicopter fueling truck on an F550 4X4 cab and chasse with a I think ZF6 speed. Had to use 2 30* spacers and grind away part of the transmission case and I don't know how many hours spent on the phone with the PTO supplier to come up with this solution. It was then I learned how many variations there are.
