Grads, I really can't answer that..BUT..you more than welcome to come down and test and see How the props work...we know some tweeking will be involved...as For numbers? we ran a "labbed" 34 when first took it out..we ran 119...the motor is no where near it's rev limiter...So with this new drive and new props we will do some testing...Dustin has a stock 36 we can try...BTW...the 34 we ran was not a "perfect prop"..Auggie has it right now to work it over...for some reason the 34 4 blade merc prop was not a good choice for the Daytona...32 and 36 seem to be the props to run with our hp setup