I ordered mine yesterday. If you don't keep your ESC up front, it would work in the midmotor with a full size servo. This first one will probably end up in my clay car, but I might order one for the mid as well, and put it in with a Spektrum S6070 low profile.
It looks to be a great quality kit that doesn't require modifications, and that's also what other customers of Exotek parts are saying. I'll measure the weight distribution before and after I mount it