Chop Shop
When you get given a list of cars to come and chop sometimes you get cars like a Tornado for example, this car is a convertible and comes rusted, if i bring the convertible or the rusted version to the chop shop he wont take the car, is this something that was on purpose? If so I don't see why, its already risky enough and time consuming enough to find the vehicle, but yet now we need to find a specific version of said vehicle, I've had to abort many lists because the cars I'm given wont be taken by Chop Shop due to it being rusted or a convertible.
With out getting into Metagaming situation, there are more than one models to a couple of other vehicles out there. You need to find the right one that the Chop guy is looking for.