Ok everyone...this is my first time posting on here. I have a 1975 Hydrostream Viper. I have put a new stringer/push knee, coring and floor in it. I have it set up with side by side seating. It had a 98' Force 120 on a jackplate with a 23" Chopper. (I have a 23" and 26" chopper) Was running 46-48 on gps. I have since sold that motor and now have a 95' Johnson 150 Fast Strike that has been modified and I am told it is pushing 170-180 hp.

This brings me to my question, being that I have the 23" and 26" choppers that are 13 spline can the hubs be changed to fit a 15 spline shaft??

Any and all advise, suggestions, help or criticism would be appreciated.

Thanks,
-Mike