I believe 64 65 66 should be the same for sure.You could also find the same seats in other cars like Olds,Pontiac,Chevelle A bodys in the same year range.I had a 66 Bench and it fit my 65 perfectly....The other models can help widen your search and make finding a set much easier.....The only real differance between all A Bodys would be the particuliar models upholstery pattern........