Went down to Homebase today and bought some household insulation and packed it behind the rear quarter panels of the car - the difference is unbelievable. So much more quiet, small bumps in the road now sound much more muted . Got me on a roll now gona try behind the front door panels next weekend! Just thought i would put this post up to let you all know that there is a cheaper way of sound proofing your car other than using Dynamat etc.