i just did my 01 tahoe and used almost 1 shop pack. this included all doors 100% coverage on the outside of the doors and 100 to 200% on the inside of the door, the rear panel area not so much but did most of it. and the back hatch i did like 2 to 3 layers of FULL coverage somtimes 4 on the inside probably waaayy too much but what the hell i dont want to have to do it again. for the roof i ended up doing some layers of 1/8" board and expanding foam so no deadener there. but yea still got like 10 sheets left out of a shop pack of damp pro. hope this helps.