I always find it amaizing that people feel the need to try and correct me, like I haven't done my research on MY TRUCK! I can't imagine walking up to someone at a car show and telling someone they don't know about their vehicle.
In the tractor world, we call these people the "Correct Police"! They're full of unasked for advice, and quick to point out anything THEY deem "incorrect" about someone elses project. Sometimes they don't even have a vehicle of their own, but they like to impress everyone with how smart and how important they are.