this will accept pumps with SAE "B" two bolt mounting with either 13 or 15 tooth spline (16/32 dp) shaft
the unit Mal had set up in his shop has a cross '50' series pump on it capable of
3000psi continuous working pressure
170 l/min max delivery, yes 170 l/min
3000 rpm max conttinuous speed
that will get you some line speed on your winch....

cheers, serg