I found this site linked over at britmodeller. Multiple full series of reference books. IDK the quality or reliability of them as references, but there are 1000s of pages of reference material in there so some of it has to be worthwhile. Was referring to scale & detail for my p47 and it seemed to be consistent with other resources I'd looked at.
Anyway, enjoy:
http://www.boxartden.com/gallery/index.php/Profiles