Just ordered 100 sq ft of Fatmat for the Challenger off ebay. Not doing the roof,,,( that will get sprayed with lizard skin before the headliner goes in.
Hopefully I will have enough to do the floor, dash, package tray, and doors,,,,
Looks to be about 25 lbs of weight, but sounds like its worth it
I thought the price was pretty good, no tax, free shipping, etc,,,,