According to the original manufacturer's description of the CV-21 in its initial year on the market, this was the "...first Glastron/Carlson to be designed and engineered for jet power alone." The "rich metalflake Gold and Sand" exterior was matched with a sportwheel, lockable glove compartment, plated grab bar, and teak trim and entry steps. Like many other Glastrons from this era, it also came with "superb instrumentation" so you'd know just how fast you were going and to keep tabs on the V8 performance. The propulsion for the CV-21 came from a Berkeley jet drive likely mated to a 455 Oldsmobile.
The pictures on this boat show an interesting fuel storage setup with large steel tanks in the engine compartment. Most boats with closed bow configurations utilize the dead space up front for the gasoline for both space savings and counterbalancing purposes. Given the fuel sucking potential of the V8 at wide open throttle it was probably a good idea to make sure both tanks were full at the beginning of any voyage.
Another interesting difference between this boat and the original CV-21's is the windshield. On all of the 1971 through 1975 CV-21's we could not find any examples without the windshield supports went all the way back to the rear bench area. Rumor has it that these gaps were designed to allow the occupants to reach out and grab swimmers or docks as they approached.