Yes i have a 1981 johnson 25hp 2c short shaft. It has the exhaust port above prop. It has the stock prop that is a 9.2x14 13spline non thru. Its alittle beat up and im trying to find another 9.2x14 or a size i could use with my 14ft semi vhull aluminium boat. Ive found 9.25x12 but dont know if 12pitch would be enough for my boat. It does 20 3/4 throttle and 25 full throttle with the wore out prop. Would like to go alittle faster or the same.