Pat, I was thinking the same thing. and I havent yet played with the prop calculator yet so thanks for your input.. I picked up my boat yesterday and havent tried the 30p yet to get my results. The 29p hydromotive my buddy gave me is a 15 spline small shaft. Anyone know can it be removed and a 19 spline fat shaft hup be put in? I have yet to put a good waxing to my ride. hopefully this weekend. Im working so not going to far

I also picked up a set GGB extreme mufflers from Trick marine unfortunately the do not fit under the swim platform

Gary, you can press out the smaller spline and put the XR one in. I had to with my new prop I got on E-Bay. I think the only sound deadening device that will fit on mine is the down tube by Gibson ect... They only work when not on plain and have no restriction.

Gary the GGB,s work great for noise. We went to conn with pat and PD was at the dock but not for me with my GGB,s. Tmone with the pantera got a ticket. Although they do kill 200 rpm for me and mine are 4.5 inch. If you decide to keep them I have a great stainless fabricator.Maybe you can angle your existing tips down and install them. When I converted to the speedy my tailpipes didnt fit any more. CMI wanted 1200 and 3 weeks and no guarenty they fit . For the bravo it took 2 tries. TOO MUCH and TOO LONG My buddie was 3 days, 1 measure and order pipe 2 cut and weld 3 polish and all for 500.

Trick marine said they'd take them back cause I had my doubts as to weather they'd fit when I ordered them. I was wondering about the Zoomers cyclones. they make a short and a long version 71/2 0r 91/2 in., both of which are shorter than GGB's They are 6' in diamenter same as the GGB's. I find if the GGB's were a little shorter I'd be able to slip them on. Also in the hotboat test on the 525 I was wondering did they test the long or short version. I guess I'll give them a call on Tues.