Here is the OASIS report that you can get at your local Ford Service Advisor. This is the report is a smaller verison of theHVBoM but it does show item not found on the HVBoM report. This report shows the two important codes to prove that your car is a GT/CS and not a regular GT.

The first code: Accent Stripe - Bodyside [CJR] [CJRAPO] Accent Stripe - "California Special"

The second code: Verision Package [AAC] California Special [AACTF0]