Dry Ice and removing sound deading to change colour of inside of car as well

I decided that to change the colour of the outside I would have to change the inside as well, so I researched about removing all of the sound deadening. I knew there were a few different methods but I thought that the best way was using dry-ice.
I phoned around and got some quotes and found Fregerts Ice in Asquith to be the cheapest.