I have a project boat that I need a set of mufflers for. It has a 500+ hp 502 and Imco exhaust. This is in a Sea Ray and I require mufflers that can go inline inside the boat, as it doens't really have tips ( Sea Ray Pachanga for those who know ).
I am looking to knock the sound way down, without killing the motor.

Thanks

RT

I have some CMI 4.5" mufflers that are brand new/never used that I paid $1300 and will sell for less than what I paid. PM me if interested.

Thanks guys, I need inline mufflers. How well do the GGB's work?

RT

GGB's work great with no HP loss. The inserts would work well in your application and they are the most cost effective.

The GGBs turned our 850 blower motors into 350 small blocks compared to open wet , they are way quieter and didn't rob power.