help with interior work
 

I just bought my reg cab 95 cummins about a month ago. Bottom line it wasnt a lil dirty, im talking headliner is almost solid black and the floor had some spots of solid grease that 4 cans of carpet cleaner didnt get out, and purple power. Got the carpet clean enough and used the interior paint. Brushed and re coated a few times and it looks great. Now for my headliner. But im thinking about builing a shelf across the top. I saw the shelf-it kits, but from all the reviews ive seen, it sucks. So my plan is to wrap that piece as well as the rest of the top. Anyone know a good place to get headliner? what about putting a noise reduction mat on first then the headliner, has anyone tried that?
thanks