Because it was so during my time. I got my Bobcat lights off a '75 Bobcat in a local junkyard for less then 20 bucks. Look around, you may be surprised what you can find. Heck, I recently saw a set mounted on the back of a late model Ranger!
I like the look of those Bobcat lights as well. I loike the Comet look too! But one that I really like are the Brazilian tail lights. Anyone have one of those conversions on their cars?