I have wrapped my exhaust pipes to help with heat and noise. Noticeable is about all I can rate the improvement. I bought the 12 inch square black foam silencer panels. They fit easily on the roof with spray adhesive around the roll bars and BINGO about 10 decibels less I would guess. I have a front and rear windscreen , roof, and doors so the noise was terrible. Those panels are cheap from Amazon. I have had them on for two years now, a couple needed adhesive touch ups . I blow the dust out of them every once in awhile, depending on how much dust I have been driving in.