Salute
The problem with trying to model an E4 as well as the E3 is it would require the model be redone, since the canopy and glass and some other details are different. I am surprised Oleg didn't model the E-1.
Drawing of E-1 and E-3:
http://www.airpages.ru/eng/draw/me109_2.shtml
Drawing of E-4:
http://img260.imageshack.us/img260/8...09e4bigvi8.jpg