I found some previous owner history today...turns out SD was at one time (1997) owned by Mark Martin (NASCAR). I spoke with someone who worked on the car that year while he owned it. I don't know when Martin bought SD, but could have likely been when I saw it at the Fun Ford event in 1995. It was delivered, enclosed truck, to a place in Indiana for cosmetics and tuning in preparation for auction at Auburn Auctions (now RM Auctions) in Auburn, IN and sold by Martin to someone.
I sent email to RM Auctions asking for any record of sale. The guy who worked on it has photos while it was there, so is going to send those to me.
Now, if I could only talk to Mark Martin!
If anyone can help, please pass on my info!