Ok , so today i took all the rear panels off and stuck silent coat using a roller, also did the wheel arches from the inside.
Used a 40 packed but didn't have enough to do the tail gate.
Then i filled the voids with the recycled plastic insulation, im not blow away with the improvement of noise to be honest, i did like the clunk as the side door shuts!
So that leaves the roof and floor , still undecided on this so more opinions would be appreciated.
From reading above the roof has already a reasonable amount of dampening and the mat should be sufficient.
Unless its a game changer i not really fussed as its not a camper conversion and as a family theres to many of us to ever sleep in it.
Fish you are a brave man , when i saw your dash stripped out i nearly shed a tear....