I used:
(1) 70 Foot Roll + (1) 35 Foot Roll of Brown Bread
(1) 35 Foot Roll of VComp
(1) Large HLiner

In retrospect, I'm not sure how much effect the VComp really has on the overall sound deadening because immediately after the install I didn't notice much of a difference in the rumbling coming from my PV muffler (which it was mostly intended to cure). However, the 105 ft of Brown Bread was just barely enough to do a single coat on nearly every interior surface. Two 70 foot rolls would have been preferable to get more of the inner door and sidewall surfaces, though I don't know if it would make a huge difference. My VX is pretty well dampened ASIS.