83 359 pete good idea/bad idea-good bad idea

My W900A had like a 1/4" of fiberglass insulation on the back wall and a bag of attic insulation poured on top of the headliner. Definitely going to seal my cab up nice and tight. Its an old truck but no reason it needs to feel like one lol.

 

made a difference in heat or noise? I considered dynamat for noise reduction but after all the reading I did I wasn't convinced it was worth the expense.....i.e. it might not work as advertised.

 

Hmmmm. Maybe I need to go that route then. Hearing is worth it

 

The 379 cab is wider. The 359 and 379 flat roof use the same cab lights. The ultra cab uses a different light with a different curve.

 

Has anybody tried roll on bed liner instead of dyna mat?

 

No they do not.......been there done that with peterbilt original lights. I own a non ultra cab 379 and 2 359's the lights do not interchange. Wider cab doesn't have squat to do with it

 

Lowes or home depot carry a sticky backed foam roll insulation with a silver foil face. Ive used it in my international crew cab to cut down on solar heating from such a huge roof and it worked pretty well. The R value isnt impressive but the solar rejection was.