Best muscle era design year?

no one answer
68 dart, road runner, charger, superbee
69 camaro,nova, mustang
70 cuda,challenger,duster, chevelle, mach I
all down hill after this but some stayed pretty cool
Actually it is a "Chrysler" poll. But the other manufacturers are also very close to same year ranges. But for entirely different reasons. The Corvette folks? It's '63 and '67. Hands down. Camaro/Mustang? '69. GM A-bodies? (Their mid size models) Chevelle, GTO, 442, GS is a whole other discussion.