The factory back-channel cars, the dealer-tuner legends, and the one-offs. Rarity claims cite a real source that counts the exact car — never invented by multiplying option percentages.
Rare & significant
The all-aluminum 427 ordered through the Central Office Production Order back channel by Fred Gibb Chevrolet for NHRA Super Stock. CRG confirms 69 units — 50 to Gibb plus 19 to other dealers. Numbers-matching cars now sell for well over $1 million.
Rare & significant
The iron-block 427 COPO, driven by Don Yenko's push to get big-block power into the Camaro. CRG calculates 997 finished cars (1,066 total COPO cars minus the 69 ZL1s); the “1,015” figure elsewhere describes engines, not cars.
Rare & significant
Joel Rosen's extreme dealer-tuner Camaros (1967–74): an SS-396 re-engined with a 427 or 454, backed by a written money-back guarantee of an 11.50-second quarter at ~120 mph — reportedly never once paid out. Among the rarest and most valuable of all dealer-tuner Camaros.
Rare & significant
A Los Angeles dealership that built 427-powered Camaros before the factory COPO program existed, with Dick Guldstrand (later “Mr. Corvette”) as lead engineer. Only about six are known to survive with documentation.
Rare & significant
A rare RS/SS hardtop wearing the pace car's Dover White and Hugger Orange striping — a coupe cousin to the Z11 convertible replicas, sold regionally in the Southwest. Per CRG, no known Z10 documentation actually references the Indy 500.
Rare & significant
Z/28 was never a factory convertible in 1968 — except, apparently, once. A one-of-one 1968 Z/28 convertible is reported to have been built for Pete Estes personally. A striking claim repeated across sources, but not yet traced to a factory build document.