I agree PJ, but real estate on that side of the engine is at a premium. Any good place for the pump on the left side is already taken by the header, engine mounts, or the frame rail. I tried quite a few different configurations (including a mount off of the left frame rail) and I believe this is the best option. I have an accumulator in the system to help with oil pressure at start up. I will also be running a four gallon tank very close to the pump. The upper 2/3 of the tank is a quite a bit higher than the pump as well.