@Shahdog , I was referring to what we call "diminished value". Buried in all the legalise one signs, is a clause covering cosmetic or mechanical modifications to the vehicle while owned by the lessor or, the finance company. There was a posting to the big Corvette forum board several years ago where a "user" added an aero kit and ground effects to the vehicle. When his lease was up, the leasing company billed him for the diminished value. He refused to pay it. The leasing company sued and won. He ended up having to buy his way out of the mess. Worse, the car looked like a ricer ............