Les Leston's last drive

Les Leston, ubiquitous 1960s accessories dealer, had a solid career in national motor sport. His most famous mount was the red Lotus Elite "DAD10" which he ran throughout the mid sixties. Now, I always thought that he had retired on a high in about 1968.

But I recently heard that he made a comeback in the 1970s with a Z28 Chevrolet Camaro. Does anyone know anything more about this?

I'm sure that's right, but can't be more specific