All the 1s ive seen rot like buggery on the bottom of A pillers round the windscreen. And the bottoms of the B pillers where the doors shut and check sunroof for dampness. Also they should have the proper charcoal recaros and 150mph speedo. And if it is genuine the vin num should read either vs6 bxx wp fb, or sfa bxx ba fb. The next two digits indicate the build date, then the last 5 digits are the vehicles individual serial number. The last 7 digits should match the engine code if the engines origonal. Hope that helps