The build date is found on the door tag.
xx/A=day/January xx/B=day/February xx/C=day/March xx/D=day/April
xx/E=day/May xx/F=day/June xx/G=day/July xx/H=day/August
xx/J=day/September xx/K=day/October xx/L=day/November xx/M=December
Take a look at the vehicle. Click on 1969 Ford Mustang Hardtop.jpg to see it.