To be clear sway on seam sealer was used in places but the Mustang style sound deadener was not applied in the FRONT wheel well. It was left without any. If your car has some it was likely added by the dealer (extra $$$) or by a PO
Also the thread in the Unrestored picture thread titled - 70 GT500 - June 1969 - Unrestored Picture Thread has a couple of really nice and clean inner fender panels.
Just added these pictures to the others in that thread
Up loaded some additional pictures for another posting in another thread so needed to add them here also
UNDERCARRIAGE CONTINUEDU16 - Passenger side rear
U16 - Drivers side rear low
U16 - Drivers side rear. Body color over red oxide base
U16 - Drivers side mid Red oxide base on inner fender panels and forward frame
U20 - Drivers side forward
If you need more, let us know
From other examples