Re: I want my exhaust louder for a low price
Yes I have it. My brother bought this boat new and it came with thru-hulls. He had the Capts Call put on a few years later because it was so unbelievably loud!
I only ran it with the 460 for a summer. I almost never opened them up for the same reason.
When I installed the 454 I just left them out and glued the flaps shut. I have thought about putting them in someday if I can find a decent set of marine (wet) mufflers.
The "kit" would depend on what you order with it. If you do not have the (OMC) Y-pipe, you'd have to pull the engine to install it....no other way. You'd also have to fabricate 4" stainless steel plumbing to match all the rest of the plumbing up. There's no easy way unless Corsa makes a kit specifically for your model boat. They may have in 1993 but I'll bet everything to do it now would have to be custom made.....not really hard if you have access to a GTAW (TIG) welder, a good size power hack saw and some 4" SS tubing. (which I do

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The actual diverter valves are just simple "butterfly" valves that move with a simple solenoid. Mine worked very well.
Yeah I can see that your Lib is a little different than mine! (I don't really like to identify myself with "Libs" actually

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You don't need an exhaust bellows either....My boat ran without an exhaust bellows for about 10 years....(with the OMC King Cobra installed)
Yours looks more like a side exhaust. You could also probably install regular marine mufflers