Welcome to the forum Steve. Sorry I'm a bit late - been short on time and chasing new posts since Friday
Sounds like your collection will be extremely interesting to me - touring cars of all sorts are a favourite of mine. Funnily enough, amongst the few I have so far is the Ekstrom car you were missing, though I had no idea it was at all rare. Not sure if the same shop would have any left by now - I got mine a year or so ago.