No James. That is yet to be built.
We concentrated on TBJ first as that was the one Andy was funding and could be completed quicker. He has about 80% ownership of TBJ as a rough guess. I was buying a house at the time so had to divert finances away from the YB powered one to bricks and mortar, of which I am still in the process of getting in a liveable state.
My own S1 has taken a bit of a back seat over the last couple of years but I intend to get the mapping finished and a few other bits done on the car over this winter and use it for a couple of years before it gets another small restoration. The YB powered car will have to be finished before I start it though otherwise I'll be climbing the walls with nothing interesting to drive. I've been hankering after driving it all last week and all this week so far.