Shelby GT500 Aquamarine Blue

[SS427 Camaro]

Back in Spring 1982 in Chingford East London, I used to regularly see a blue circa 1969 Shelby GT500. We had an epic tear up one day, me in my “ tweaked “ MK1 Capri 3000GT. In my minds eye I can still see the smoke poring off of the Shelbys rear tires as he booted it and it slewing sideways as it struggled to find grip. We stopped and chatted for a while, but I can’t remember the guys name or anything about the car.
Could this K registered ( imported to Britain in 1971 ) be the same car ?

[SS427 Camaro]

I well remember Winning Post, their showroom @ Chingford Hatch, but I’m not sure if the Shelby that I saw was connected to them.
A then pal was keen on a Boss 302 that they had on the front, until he saw how absolutely rotten it was !

[SS427 Camaro]

Unless it was the guy who bought it from them that I met ?
Can you recall what year it would have been ?
They had a terrible reputation as being cowboys.