David,
Welcome to the forums - and to SSP ownership. You will find a great set of people here who can help you with your restoration and info gathering.
A first step will be to post up some pics of the car.
SSP identification help/info can be found at:
http://www.specialservicemustang.net/Technical.html
There is also a great guide to identifying CHP particulars at:
http://www.specialservicemustang.net/CHP.htm
Hope this helps!
