For 1980 and 1981, D7TZ 1130-K was the only center cap with an armament. It was *black* with a red center ornament. It was used on Ford's
best wheel at the time, which was the 15x6 "Forged Aluminum Wheel."
The E2TZ 1130-C chrome center cap came out until 1982. It was *chrome* with a red center ornament. It was used on Ford's
best wheel at the time, which was the 15x7 "Deluxe Argent Styled Steel Wheel" - which was introduced that same year.
Perhaps when E2TZ 1130-C came out in 1982, Ford also decided to retrofit this "upgraded" center cap to the best wheel of 1980 and 1981?
The lesser "White Styled Steel Wheel" and "Cast Aluminum Wheel" continued to use D7TZ 1130-K.
Lucille: 1985 Ford F150 XLT Lariat
*Colors: Dark Canyon Red exterior, Canyon Red interior
*Engine: 5.0, CompCams 31-230-3, "Thumper" E7 heads, Edelbrock Performer intake, Autolite 4100 carburetor, DuraSpark II ignition, Thorley Tri-Y headers, Flowmaster dual exhaust, H-pipe.
*Drivetrain: AOD transmission, 3.55 gears, 2wd.