There is no doubt, if you want a new car (not bespoke) tomorrow you could have it. When I bought my +4SS it was already a built car sitting in stock with MMC, I believe from the MMC website there are still some available.
last I heard, 2 +4SS still unbuilt, and there were 2 MMC +4SS at Top Gear Live, plus a few around the dealer network (RTCC has 2 unregistered, for example)
