Galen Govier is considered on of the most knowledgeable (arguably) individuals in the Mopar community. I remember reading a lot about him in Mopar Muscle in the early 90's.
Way back in the mid 80's he was a member of the now defunct Mopar Muscle Club International and decoded broadcast sheets for free if you were a member. He did my 65 Dart GT convert and was spot on about it's options and features (still have the typewritten sheet he sent me). Then he got famous and charged for decoding broadcast sheets and inspective your car.