New to me, 21' Liberator boat and it has a SSM II drive 1.25 : 1 ratio, (No prop) it is the 1 3/8 shaft 19 spline 4" hub. Could you lend me some advice on prop size, pitch, # of blades, etc.. I'm planning on a blown 509 for power. Anyone have any props available for this drive???
Any help/advice would be greatly appreciated..

Found one, thanks for everyones help

FALSE ALARM.... I found one, bought it and they lost it before they could ship it....my luck. Still looking if anyone has something in a 19 spline 4"hub in a 26-27 pitch... anything over 14 1/2" will work... I can have it cut down if bigger.

Thanks in advance...

I have a 3 blade 27 pitch prop that will fit your drive,i will check exact diameter and pitch 500 plus shipping

i have a pair 16.5 x25 800.00 pair

Would you please send me a pic and the diameter.
Thanks!!