prop help for 1860 sc 90 hp

[riverman1868]

hi I'm looking for advice on my rig, I have an 1860 sc 90 merc 2 stroke running a 13x19 3 blade and jackplate. I am at 39 mph at 5500 which is max rpm I can lift the motor and not loose much speed but increase rpm. I think I should get better top end a number of people suggested a few diff props 13x21x3 13x19x4 13.25x23x3 does anyone have experience in prop setup and top end for my rig? help is appreciated thanks

[Sigma]

I would ask in the prop forum. Also check the yamaha and G3 web pages for their performance specs and see what the ran and what they got.