Hi Peter, if you look at the Eduard instructions sprue G and X are all parts unique to the MAG built D.VII. The differences are as follows: Engine, guns, ammunition feed, gun mounts, radiator, fuselage (nose panels are different to fit to the MAG radiator), and axle wing. There may be a few smaller things but that is most of them. If you can find a 1/32 scale Austro-Damlier and have no problem scratchbuilding the radiator and adding the various louvers it should not be too hard to do, I see the Romanian version had no guns so just add a panel over the gun mount location and you should be good to go.
Dave