Hopefully, later this year when it warms up I will start to recommission my 1986 MK2. One of the things I know has deteriorated is the sound insulation that Dermot used in the Corby factory, the type with two layers of foam sandwiching a thin layer of more solid material. It is this thin middle layer that is breaking up.
Have others removed the original insulation and if so what has it been replaced with?
Would something like Dynamat be suitable even if it is slightly heavy. Maybe even put some inside the doors.