Come on, Denny. You used to frequent the VCCA website. They do have very knowledgeable people over there.
However, I have seen total BS and contradictory statements of what was "correct" regarding various Advance-Design engine, interior, and exterior colors and combinations (and options). It was not uncommon for some strongly held "opinions" (used in judging) being based on opinions and non-GM documentation. And, they sometimes had no problem saying that their beliefs were more reliable than GM documents.
Rear bumpers were painted in 1952 and 1953 (3100 and 3600 - RPO-218x)
