thrush turbo muffler

Best turbo mufflers are Walker Dynomax Super Turbos. Sound great and have had them on the charger for over 20yrs and still sound good.
They are loud with verylittle to no drone.
If you want loud the Summit Turbo Mufflers are pretty loud have them on my 74 Swinger and they sounded great gonna replace them cause I got a new exhaust kit from them