02-12-2015, 04:43 AM
I used to own a 66 mustang that had a DSO 89= Transportation Services I always wondered exactly what that meant. I was told these cars were used for Ford executives and some were test mules for options. Does anybody have any more info on these cars? It was pretty much a loaded car with lots of options including Disk brakes and dual exhaust automatic Trans, console. seat belt warning light and much more.