If this is 8 years in the past --the episode aired in 1984 -- the events took place in 1976. They say that Bo was fresh out of high school making him 18 and thus born in 1958. But John Schneider was in fact 19 when the show started in 1979; thus born in 1960. Bo's age is off by 2 years! Also, what is so special about 8 years? It would make sense to celebrate the 10 year anniversary of the car. That would make it 1974. If Luke was in the Marines at that time, then he probably would have been deployed in the Vietnam War. Whereas by 1976, the Vietnam war was over.