1968 A-Body Original 120MPH Speedometer
the Rally Dash in my OE original 68 Barracuda had a 120 mph speedometer, just like the one listed for sale. Note that it says in the link that you posted'
'can be given a special identity' you posted a link to an optional trim package.
With the 120 mph speedo in the standard Rally Dash and the 150 mph being part of the optional Sport Trim package.
My '68 also had the "Sports Trim" interior package with the fancy door panels with the pockets and the trim around the pedals, but no 150 mph or trip odometer.
My car is also an early '68, built in October of 1967. And we all know that Chrysler built with what they had available.
