I got a reply from Craig:
That looks very much like a chassis that fibre Lyte made from 'CFC' for the trx1 to narrow the front end so you could run the 2.0 minisprikes on the front and still fit in the box. I was the first to do it by butchering a kit chassis to do it to mine but later I machined a set if wishbones (which later became the geometry for the trx3) which was a much better solution, short wishbones gave more steering, though a tad less stable.
It's very rare I only ever saw one on Tony Stephensons car.
I used to run 2" 4wd ministries on the front. Used that setup to TQ my first radio race car round.
So it's a piece of history it seems
Anyway, I don't need it, so it's for sale