Could some help clear up a few things for me???<br />I have 2001 merc 150 XR6, I have two props one is a quick silver Alum 14.25X21 WOT 5600+@65ish mph(would probably go over max RPM) and a michigan wheel 13.75X21 5000rpm@57mph maxed out. I'm not concern with speed I'm concern with max RPM.<br...