I went crazy with LMC products. stripped truck and painted with Gillespie Forest green, base paint for woodland camo. painted entire truck in and out.
used the firewall insulation plus the asphalt base silencer then the Jute padded mylar padding. on top of that i put the rubber floor mat.
In the rear i have added side wall insulation using HVAC duct insulation it is peel and stick with alluminum foil on one side. i then spray painted the foil.
i dont have the finished pics with floor and rear done, try to post them tomorrow. I have had it back on the road and it is almost as quiet as my 2005 durramax 4door