Hey guys I just picked up a 1987 Larson 17 and a half foot boat. It has a mercruiser 3.0 and a alpha one out drive. It had been sitting since 2002 but I got it going and running good (after a long few days) and I'm looking to get a new prop just because mines dinged up bad. It goes about 36 at I think around 4500 rpm so is that all I can get out of it or should I play around with the prop? It has a 48-78120-19 which I believe is a 14 by 19. What I'm wondering is how I get a new prop. Will any 14 by 19 rh 15 spline work? Theres only a few if I search for that number on eBay. I was hoping to find a used stainless. Will this prop work and also? http://www.ebay.com/itm/112555341370 what do the numbers in the middle mean? Thanks and sorry I'm sure your burned out of prop questions but I'm new to this boating thing this year! Loving it to BTW!