Call ACME with all your info so that they can run the numbers. Just because someone runs a certain prop on their boat, it doesn't mean it will work for yours. There's just too many factors. Elevation is a big one. There's also ballast, motor, tranny, main use, secondary use. It's also good to have some solid data on how it performs now. I go through a couple data runs before and after a new prop purchase. I log speed and rpm at all the various mph. A large amount of data gives the guys at ACME the right info to make a recommendation. I'll do the same once the new prop is on and report back to ACME so that they have more info logged in for my boat.
I have a DD but, it's vastly different from yours. I run the ACME 911. It was designed as a replacement for the 653. As much as I loved the 653 that replaced my old OJ 13x13, the 911 is way better for me.
Pic:
Stock OJ 13x13 4 blade, ACME 653 13x11.5 .06 cup 3 blade, ACME 911 13x10.5 .08 cup 3 blade.
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