I used the Vintage Carriages Trust site to get photos when I was building models of Dreadnought carriages. It doesn't have anything about LT EMUs though. Yes, I have of course Googled and there is no problem finding photos but drawings seem to be non-existent. However, I have discovered a number of square-on, or nearly so (and I have a program which will adjust pictures for perspective), photos on the London Transport Museum website of both T stock and F stock, which I am also interested in building. If I can track down dimensions, these will be useable for modelling purposes.