Bidvest warranty

I'd like to Cancel my plan for policy No: B***

Because of this clause : 1.2. "the vehicle has not been altered or modified (including any modification that alters the Manufacturers Original Technical Specifications of the vehicle);"

Because some of my engine parts like chain, water pump, radiator, clutch kits and head gasket are not originally from Nissan... I got it from an auto spares

And your consultant didn't warn me on the phone call when i registered

How do you guys expect an old car to still use original parts at this point of time?