i went with a psc hydro assist on mine. i can turn 35 inch bfgs with my pinky

 

I've got the low-perf. black tank. No EVO system. Problem I've got now is when you go to crank the wheel parking or quick rolling slow speed maneuvers in like a parking lot I would describe mine as twichy manual steering. Oh and did I mention it's a joy backing my bike trailer or a boat trailer up with. Got another pump that came with my Hydro-boost system off of an 03-06 Suburban. Any chance of it making more pressure? It has a black tank on it too with the OEM dual fluid returns....Very, very clean low mileage unit..