Does somebody know about a watercooled kit from CMI Elbow-Top direct through prob (Bravo 1)? We have restricted laws and not even silent kits (such as captain's call) are allowed anymore. It would be necessary to match with CMI's E-top only and should be watercooled 572ci (600hp+)... Thanks.

Going through prop with a 572/600+hp is going to kill all your power. Have you looked at some CMI sound elimination mufflers or turn downs or possibly having a combination of both??

I'm pretty sure you are not supposed to run 525's over 3000 rpm with the thru prop activated on silent choice, I'm sure a 572 would be choked off big time.