prop help

[downnout]

need help finding the rite prop
23 center console 1974
225 yammi ox66 2stroke
no bracket, transom mounted

want 3blade yamaha prop but unsure of pitch and size

thanks

[Sceptre20]

Mine ran well with a 13 3/4 X 19 stainless steel.That was on a 1973 23'cc with a carbed 225 Yamaha.