Going up another year to '68 this garden variety fastback has been turned into something special. Late-model Mach 1 wheels, great paint, and custom interior make the car a stand out. Compare it to the T-5 to discern the subtle differences between the two years. Right now '67 and '68 fastbacks are among the most popular Mustangs out there and prices reflect this. Like for the first Mustang body style, '67-'68 parts availability is very good.