PDP-8E and TU10

Some time back I got a nice double bay DEC rack that is the dark orange color with beige trim. The top front has a slight slope to it (on one side of the rack this slope contains the controls for the TU10). I'm pretty sure that this rack is the "correct" rack historically for the 8E I received separately. However, in the rack I got was a complete TU10 with the TM11 interface. Since the unit includes the TM11 one can be sure that it was used with a Unibus PDP-11 system, not an Omnibus system. I'm starting to suspect that the TU10 was used with an 8, and the 8 was later upgraded to an 11, so the TM11 was added. How likely is this? More to the point, can the 8E use a TU10, if so via what 8E modules, and is it "historically accurate" to put a TU10 on an 8E? Or - was this a config that was possible but so rare as to not be representative? Can anyone shed some light on this? Jay West