correct propeller for Mercruiser 5.0 mpi 260 hp, on a regal 2100 LSR. I had a ballistic 14 1/4 x 25 on the old engine which of course does not fit on the new one. It stood in a Volvo Penta V8 260 hp before.should I just buy the same propeller on the new engine? The mercrusier have a max rpm of 5000, seem to remember I had higher rpm the Volvo.And i want the same speed as I had 