A little advice needed. The boat has stock 9x12 trim tabs in place but no tubing, pump, or actuator. I will be upgrading from a 225 2 stroke to a 250 HP 4 stroke. I am looking to put a Bennett trim tab system in place, a complete new unit. The 2 suggested for this boat are the 18x12 and the 24x9. If I am thinking right the 24x9 actuators should boat up into the same holes as the stock actuators so I was thinking 24x9. Which would be better for performance.