I do not have a Cycle Truck handlebar stem for sale.
It would help your search to look for the part you need with the correct description. They were 12" tall, not 2.5"
The Cycle Truck used a Schwinn Superior forged stem, it's 12" tall, and they had the larger 7/8" stem size diameter like on earlier standard height stems.
Wald also made a 12" forged stem with a separate top and lower tube. Wald also made a stamped 12" stem, and it was the newer 13/16" diameter, so check closely.
You can find these tall stems used on many different bike applications; it was not just a Cycle Truck item. At our Schwinn dealerships we special ordered options on the Wasp, and American models to sell for newspaper delivery. Heavy Duty wheels, Hubs, 7000 series Messinger seats, some leather covered, spring forks, Superior stems, Box handle bars were just some of the options ordered.
John