1990 Mustang 5.0 SC SSP Information Needed

[Five-o-joe]

If I should post this elsewhere, let me know and I'll step out of this thread.

I too have a SCHP car. It's a 1993, unit # 2.12.465. Last 6 of the VIN is 164516.

I'm trying to find out if my car was unmarked or marked. I don't find any holes in the roof, etc, interesting is that the DSO is 21, not 22, and the paint code is YN, not the "special paint". Is there a way to determine if it was an unmarked car?