I agree with Griff. A 23 mirage plus, spinning 5300-5400RPM would probably work great. 26p 4 blade is too much prop for your setup. Ultimatley, a labbed 25 mirage plus may be your best prop. But try a stock 23 first. Spinning that motor faster with a 3 blade will help the drive live longer too.

Thanks for the input, I have a 23 mirage plus to try now. I do like the lower load on this old drive

ok i have the same boat the mirage works the best. i have 718hp 540 dart motor .. first thing you need to do is get your rpm up to 5500and your boat will wake up.i am runnig over 80mph all the time. i try all kinds of props the mirage is the best . i think in 1994 they made the drive higher. my buddys drive was higher then mine so the 3blade works the best . now i use a old mirage prop not the plus. you have to prop your boat closes to your red line http://www.youtube.com/user/SuperBaj.../2/jmnD9VV_jB0

What year is your hull ??

I have never tryed a mirage I have only ran a bravo1 26 pitch, and I run 70.2 gps at 4900-5000 rpm in my 240 sport. But I have the outdrive 3 inches higher then a stock 240. Do you want to run wot all the time, or do you want cruising speed? I gave up some top end I believe by running a bravo, but my cruising speed is awsome I can run 41 at 3000 rpm.

1988 i got it new with a 365mag 150greas bravo drive last day i put a 24bravo 1 prop on running 17mph wind 70 degrees out . had 75 gallons of fuel doing 80mph in the wind .going 81.9 the other way at 5600rpm frist time i cant beleave that prop work good the 3blades always work the best for me. well my boats is sleeping now come may i will test it again

I had an 86 24 sport with ITS XR very deep was orignally an Alpha with a 620 teague turned a 28 bravo ran gps 80 at 6,000rpm
Rich

PS sorry I had an 2inch shortie also but still deep.
Rich