Here's a stupid question. Does it make a difference which way the hydraulic pump on an older Fisher is driven? I'm swapping a setup from a 87 Chevy p/u to a 90 Suburban. They are both 350's but the Suburban has a serpentine belt and the waterpump spins counterclockwise. (the drive pulley is mounted on the waterpump.) Will this work or does the plow pump have to be driven clockwise? There is nothing on the pump indicating rotation. Thanks in advance.