I am replacing a diesel engine with a gas engine so I need a belt driven Power Steering pump in place of a gear driven pump. But the pumps I am finding are 3.5 GPM at 1200 PSI and I need 4 GPM at 2200 PSI. I have a pump on the Allison MT 643 transmission that is 20 GPM at 2200 PSI. Is there a...