Ye getting a at back system powerflow exhaust system. Phonesd up to declare it on my policy to see if it would affect it. And guy said if it was standard replacement nothing but if it added performance then they wouldnt insure me at all! ITs my dads car as well and hes over 40 and im only additional driver. I thought they would at the most increase my premium by a few hundred pounds which i would be happy to pay. But said wont even insure me on it watsoever! Any suggestions on wat i should do? car was booked in for tomoz at 9am.