I got 1 extreme door kit, (4) 12" by 32" i believe. That would be enough to do 1 layer on each door, but not enough to do both the skin and the wire-holdy part (whatever that's called) I was just going to remove the plastic weather sheet thats on the door right now, duct tape the wires down, then mat right over that. Then I guess you just punch out the holes you need and reinstall the trim peice?