I know this car well. I know the owner too. It's an amazing piece of work. Ridiculously powerful it's a ground up recreation of the original Grp5 car. It has raced in the past and was built to compete in a class that didn't materialise in the end.
I have photos of it taken at the 2008 Abingdon CARnival sprint day somewhere. One of the drivers that day was a close pal of mine who rallies and sprints Stratos replicas. He found it a real handful and he span the car more than once.
It's been offered for sale several times over recent years. A monster of a car.
ETA: Here's a shot of my mate Dave Watson launching the car off of the line back in 2008.
And, here she is at the front of a queue of Stratos reps also at Abingdon.