As for the 1968 Z/28 Camaro, its trim tag date is 07C, which would be the third week of July in 1968. Production of '68s stopped in the fifth week, so this is one of the last '68s made.

This 1968 Camaro RS has a very ... giving us the rundown on everything that makes this not-exactly-white ‘68 Camaro RS ... Under the hood sits a 6.2-liter LS3 engine with LSX branding on top ...