[sixtiesmuscle]

'62 Belair is an expert on this stuff, but, if memory serves me, no the '62 Z11 "package" was only available over the counter, so, would have been dealer installed, or, sold to basically anyone who wanted it. The story is that No '62s got aluminum front ends from the factory. Since Chevy wanted to sell Impalas & Super Sports, but, most racers put the aluminum on Belairs & Bicaynes in '62, Chevy decided to build the '63 Z11s as the only way to get the aluminum components. That, at least is the story I've heard many time over the years.