I had a 90 hp Honda same year on a 2000lb+ 25 foot boat I ran the largest prop I could fit with a very low pitch and round blades it revved out to 6000 perfectly and did 29 knots. I now have a 130 hp honda on the same size hull at does the same speed 29 knots butt takes more fuel it has a 4 blade ss standard pitch prop. sorry I cant give you specific dimensions.
but your prop dealer should be able to help you if you give him this info.
the 90 is a great motor with a good low gear ratio and is able to swing some big metal.
Good Luck.