Gary metioned to me that the 55-4 option Custom trim included all the options contained in the trim package not just the wheel discs as I mentioned above. Tiple A the source of that comment was probably aware of that but did not explain it completely to me.
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email from Gary to Firebird list.
Date: Mon, 8 Mar 2004 10:38:12 -0500
Jim M. called me this morning and was very helpful and explained why certain things such as the custom package don't show up on the billing history. He explained, when a car was ordered with with the custom trim it came standard with certain things within the package such has deluxe wheel covers, steering wheel so on. BBC standard wheel but standard within the package actually it is a deluxe wheel. I thought you guys would be interested. Gary Plowman