For 1968, a factory installed anti-theft alarm system was available as an option, but less than 400 cars were so equipped.
Pontiac almost beat Chevrolet to the Coke bottle design body, with their 1965 Banshee, a two seater convertible sports car that would have been hefty competition for the Corvette. GM stopped it, and then Pontiac president John DeLorean later became president of Chevrolet.
T-top does not refer to the shape of the roof, but rather it is short for Targa Top. The original design was a pure Targa but body flex demanded the center bar, discovered late in the design.
Due to policy changes at Chevrolet, Corvette was treated like all other car lines for the first time, and quality dropped drastically. With bad publicity in most magazines, policy was re-thought and Chevrolet quickly restored independence and higher quality to Corvette production within a few months. Many believe that all 1968 models still carry the stigma of having "the worst quality" of all Corvettes.
In 1968, all big block manifolds were redesigned to actually sink into the lifter valley as the hood clearance was less than in '67 and earlier models. As such, a 1965 to 1967 big block intake manifold won't fit in a 1968 or newer Corvette with a stock hood and air cleaner.
The exception to the above was the L-88. It retained the high rise manifold and also received a special hood, which was externally different to the regular big block hood.
Emission control equipment was installed on the first 1968 models in the fall of 1967 even though the federal law required it only as of January 1, 1968.
1968 was the first year an AM/FM stereo radio was offered as an option.
The "Sting Ray name" was not used on the 1968 Corvette, but returned
in 1969, this time spelled "Stingray" as one word.