Looking for the car I built in the early 1990's..........

I know this hasn't anything to do with motor homes but I am looking for the car I sold 4 years ago. It's an NGTF Roadster, Reg No: SAK 900J
I built it from scratch in the early 1990's. I am looking for any info about it, maybe one of you has seen it on your travels, if so please let me know I would appreciate it.
Cheers
Pete