Do all big block convertibles built within the "x code range" have either x-22 or x-66 on the trim tag notwithstanding pace cars?
FYI... My 04d (with 04L on the trim tag) has no x code on the trim tag but it is a small block non style trim car.
Looked at a 04c small block convertible this week with x11 on the trim tag in keeping with the style trim installed on the car.
'69 RS Z/28 Olympic Gold, 711
Flat hood no spoiler, black top, endura, 4:10
69 X77 Z/28 69 711 Original Paint Unrestored
'69 X66 Convertible Cortez Silver 712 black top Endura, auto, bumper guards, am/fm rear speaker 44k miles