Independent · Source-led · American performance history Issue 01 · 1951–2023
American Muscle Car Facts

Showroom arguments.
Race-bred answers.

General Motors option code

ZK6  — Concours Sport Sedan (Available March 1968)

ZK6 (Concours Sport Sedan): a General Motors factory option code recorded on 1 model across 1968, with installs and price where a source states them.

1 model · 1 model year · 1 source

Blue 1968 Chevrolet Chevelle SS 396 two-door hardtop on grass at a car show, front three-quarter, with the SS 396 grille badge, black-out lower body and 396 fender badge
1968 Chevrolet Chevelle SS 396 sport coupe in blue Photo: Sicnag, CC BY 2.0, via Wikimedia Commons

Every sourced appearance

Year Model As named that year Price Installs
1968 Chevrolet Chevelle and Malibu SS Concours Sport Sedan (Available March 1968) RPO $131.65 640 Reported

Every row traces to the source it links from on that model's own year page; this table only collects them in one place.