The boxer 6 looks a nice drawing, porsche and volkswagon service manuals are a gold mine for line drawings, lycoming and continental is rare to find.
V12? I dreamt of building a V10 but carried away with tracing line drawings of f1 car stuff, lots of
cad, no swarf or parts.
Stevehucks, you were at the NAMES event i think i remember you saying, how did all that go?