I recognize your username from 4EP. I've seen the pictures there, and you sir have an awesome collection of early Fox Mustangs! I had the pleasure of driving one of your recent cast-offs (the white 47K mile '85 GT that was in Maryland), and it was a very nice example.
Welcome to our little forum! Personally, I am not familiar with that particular SSP, but there may be others here who remember that car. There's a wealth of information and knowledge here. I am constantly reminded about how much information some of these guys have locked up in their skulls about SSP's, and how much I still have to learn myself.
Thanks for posting up pictures - we LOVE pics!