I've got a rear shock here - can't recall if it's YZ or IT400, though... Seems to be in good nick, but the bump stop is gone. Cheap.
FWIW, the D & E shocks are all the same basic thing from YZ125D to YZ400E and the IT-Fs (and possibly the IT250/425G) - the only real difference is the internal spacer that's used to restrict travel.