Some of these were originally posted back in mid-90s so quality is pretty poor unfortunately. 1967/68 T500-I Cobra 1968/69 T500-II 1970 T500-III 1971 T500R 1972 T500J 1973 T500K 1974 T500TT 1974 T500L 1975 T500M 1975 GT500A 1976 GT500B  

The Cobra or T500/5 – 1967/69 T500II – 1969/70 T500III – 1970 T500R – 1971 T500J – 1972 T500K – 1973 T500L – 1974 (pic thanks to Don Leeson T500M – 1975, correctly identified thanks to Don Leeson GT500A – 1976 GT500B – 1977