General Extended Warranty after modification

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General Extended Warranty after modification

one of the reasons i ask is because the additional cover i selected for my fiat specifically says it will not insure if the vehicle has been modified in anyway. Wasn't sure if sound deadining is classed as a mod, i am sure it does
 
What could they invalidate if you sound deadened the doors and boot? And if you have selected additional cover why not just ring up the company that is with and ask them so you no for definate?
 
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