...there are a couple of different ways to go back to the standard configuration.
Here I've grafted in the trunk lid from a Revell 1991 Caprice, the original body style for this model. This will be a 1996 Caprice, which used the C-pillar window which first appeared on the '94 Impala. The little white strip is a piece of plastic that will simulate a chrome strip that appears at the bottom of the trunk lid on the full-sized cars.