If you are wanting to cut down on cab noise, I would recommend sound deadening the cab floor under the carpet. I would advise against wrapping the exhaust as that may cause a rise in EGTs and I don;t think it will reduce sound enough to be worth it.
Thanks for the advice, I'm about to work on the sound deadening full interior. I was just curious as if it would have any affect. Do yal think a layer of Rattle Trap then a 1/4 in Closed cell foam layer and then a layer on 1lb/sq ft Mass Loaded Vinyl will make it luxury car quite in the cab or is it over kill or any other ideas?
I sprayed my cab underside with Rubberized undercoating, it helped some. (soak those cans in hot water 1st to make 'em spray right)
I'm about to pad under the carpet as well. I bought a bunch of those closed-cell mats you put under a sleeping bag on a clearance. WAY cheaper than Dynamat, and I've been very happy with it in other cars.
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