What’s your current top speed?
out of curiosity, what make/model boat?
Most stainless props are performance props simply because stainless allows for more aggressive blade shapes and whatnot. As for those stainless props that don’t offer a performance advantage (I.e. mercury vengeance) over aluminum, there’s not much point in spending the extra money.
if you do go to a non performance stainless like a vengeance then you need not reduce pitch as the vengeance is a stainless casting of a no frills aluminum prop.
If you’ve got an alpha gen2 drive the ratio should be on the side of the gearcase. Otherwise, let us know your top speed (gps preferred) and we can make a highly educated guess as to your ratio.
ill send you a pm.