I have asked Justin at Rumney Models if he would rescale his 14T anchor mount tank underframe and brake gear etches to 7mm scale and he is willing subject to getting enough interest to make it worthwhile. The underframe would suit the 14T class A and class B tanks, as well as some of the 20T class B anchor mount tanks (and as a standard RCH design it would also suit other wagons but then you wouldn't see much of it). Would anyone else be interested in purchasing one or more of the kits? The Rumney Models website has an info page with the instructions here - Tank Wagon Underframes – Rumney Models . He has also drawn the artwork for the anchor mount plates and saddles which could also be produced in 7mm scale. I plan to make pressed brass ends and roll brass barrels for the tanks for my models so the ends could be available to others if there is enough interest for the etches to be produced. One example: I hope Richard ( @Ben Alder ) is OK with his photo from an RMWeb thread being reposted here. Paul Bartlett has photographs of a number of prototypes in the Midland Tar Distillers section Midland Tar Distillers unfitted bitumen tank wagons and others. David Larkin's Non-Pool Freight Stock 1948-1968 books have numerous examples of the anchor mount tanks. I think a few anchor mount tanks will provide a little variety amongst all the Lionheart/Dapol and Slaters tanks around. If you are interested in an accurate, reasonably easy to build etched kit for this underframe please reply here, or pm me or Justin ( @jjnewitt ), or through the Rumney Models website. The cost is likely to be around 3 times the cost of the 4mm kit.