Hi Bobby,
Congrats on the new SSP! That's good that you were able to determine the Unit Number. Here is some good reading material about the CHP cars, if you haven't seen it already -
http://www.specialservicemustang.net/CHP.htm
I'm not sure on the interior question. In terms of getting your unit number verified, here's a good thread about getting registration info from California DMV -
http://www.specialservicemustang.net...ead.php?t=2676
Look forward to seeing pictures. I'm curious in the color of your shock towers.