A NOTE ABOUT THE LEAD IMAGE: I apologize for confusing with the lead image of the 1963 Impala with the Z11 package. First, some 1963 cars were built in 1962, starting around August 1962 to be exact.
There are quite a few rare Chevy V8s. I could go on about '56 Corvette dual-quad 265s with Duntov cams, ZL-1s, L88s, L89 aluminum-headed 396s, and L84 fuel-injected 327s. Rarer still is the Z-11 427 W ...