Finally got hold of an E 10 from a LHS. I find it a bit confusing though, the box has this pic:

Which leads one to assume you can build it either way. However the instructions don't seem to show it -- as the build drawings and painting guide depict an E 10 as that of the model on the left pic.
The kit offers two types of tracks -- early and late; same goes with the drive sprockets.
Any comments on this? Were there two E 10 designs, suspension wise?
Thanks