Hush Mat, Peal And Seal, Lizard Skin

A buddy of mine who's dad has owned beissel racing here in michigan use to build custom roll cages for nascar and also did many other things for nascar and he said they would use rolled roofing sealant on the floors of the cars and it would make the cars extremely quite.

I myself on the my duster, wire wheels my floors,primed my floor and then painted my floors and then used an autobody sealant on the floor pans that dries to a hard rubber texture and knocks noise down a ton.....I then went to my local Menards (same as home depot and lowes) and I bot a large roll of aluminum foiled insulation barrier that is used alot of the time under vinyl siding or in attics or wrapped around ducting and so on ... ($15.00 for a 30 foot x 3 foot roll I think it was ) I will then brush contact cement on my floors and roll out sections of the material to contour to my floor pan and once it is all in place I will duct tape all the seams.

its almost like a heavy duty buble wrap with an aluminum foiled like type of backing on both sides.

plus when I put my new carpet kit in which already comes with I think almost half inch thick padding built in ....plus the carpet itself, I think it should be fairly quite and very cost effective.