Ahh HAhhh!
They are missing one!
There is a Challenger in Magnum PI on the first or second episode. Magnum chases the "bad guys" which motor around in a 70 or 71 challenger I believe. It was a vanilla chally in pea green with a standard flat hood and v8 badges. Of course it gets driven over a cliff and explodes (it was the 70/80's after all...didn't all cars roll over and explode in fireballs back then?)
Check out hulu. I think they got the first season of Magnum.