don, try scott or cathy mander @ 850-875-0381 / see add#12473 they are in quincy, florida look's like they may have a set of 17 x 23 4-blade props which should work well 4-u with your 18% over drive set up OR try randy @ cobra power @ 305-893-5018 in n. miami, florida / see add# 10084 looks like he may have a try and test program too ! good luck 2-u

ps: u-need the 19 spline long hub props like an o'l #3 merc.