If you have a couple, then you might like what I did to my 2-155. I put an electric fuel pump on it, makes a big difference in HP when the fuel level is down to the bottom tank. The other thing I did was put a fuel cooler on it. That made a difference as well. Both me and the hired man thought it was a whole new tractor. It now has more power, and doesn't have the power fade off toward the end of the day as the fuel gets hot and has to be lifted from the lower tank.