No idea on quantities on how many of each, was told a while ago the IOW ones haven't sold that many again due to the rolling stock issue, and speaking to a number of customers on the island who pop in to the shop every now and again they want to buy it direct from a shop and see it running first... although I think now Havenstreet shop has them also. I guess that solent tunnel was the one I read about which was on the FYN branch which I had seen plans for. As you and I know Pete rolling stock for the island is not an easy thing to do as they are a bit of an odd ball sets LBSC, SECR, chopped down changed ect... I don't see it happening any time soon sadly, but should be some more kits in the near future, as I am working with an Island based company if you like to possibly produce some more, although 4 wheeler stock and not bogie.