I have an '89 Saltare which has a 454 and straight pipes, too loud. I'd like to quiet it down. I first looked for SuperTrapps as they were factory on earlier boats but are NLA unless you can find NOS. Given that I see two options:

One is the common fiberglass ski boat mufflers. None I've seen give a decibel reduction. Anything is better than nothing, but installing these would require cutting the floor and glassing in new wood so I'd rather not do that for an unknown change. I also see many threads mentioning these blowing out or cracking causing leaks, not great for anything at or below the water line.

Another is transom mount mufflers, such as Hardin Marine offers (https://www.hardin-marine.com/p-1260...silencers.aspx). Theses claim 8-10 db reduction, or about half as loud. They're also compact and should be an easy install after getting the gas tank out of the way. I'm leaning towards trying these first and if still too loud I'll put the long ski boat mufflers in front of them.

What options do you guys recommend or have tried to quiet down your boats?