Thanks, Bill, but I've seen them (with the body-coloured grill) without the SS454 option.
For example.......
However, your observation helps in the description of what I'm after. Which RPO were the trucks that looked similar in appearance to the SS454, but were not actually SS454 trucks?
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2004 Z71 Tahoe 4x4 5.3L (factory white monochrome theme)
1989 Silverado K1500 4x4 5.7L sportside (white monochrome theme)
1967 Belair 2-door-post (project)
1967 Corvette 427/435 coupe (now 502/502
red road warrior)