Can you ID this manifold ? Look closely …

Maybe for a W2 headed motor & Thermoquad? I also noticed the D/E casting at the bottom left of the manifold. Isn't it usually D/N. (Day shift or night shift, depending on where the arrow is pointing) Does the "E" stand for evening? Lots of strange stuff on that manifold. You know what it's for don't cha! :lol: