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wayne I have a question regarding sound deading. I am planning on competeing in the s.s class next season, and am about to start rebuilding. I am wanting to heavily coat my interior with cascade audio vb-1, and apply roll-on deadener on top of that. I also currently have a large sheet of roll-on deadener on my roof , with a smaller sheet on top of that, is this legal for s.s.. The rules say use within manufacturers recomendations, and most manufactuers recomend multi-layers for maximum deadining