I can be certain rear support tabs are not provided on neither my 7000 or 4000B. You could "carefully" drill a hole on each rear side and install a bolt from inside acting as a stud to attach some custom metal brackets. I have yet to drill my units, I'd recommend taping everything up to avoid ANY metal shavings from entering your Eventide.
This way you can unbolt the rear for later removal of unit.
The only pre-made rear support I found bolted to front and rear rails, weighed around 13 lbs., and cost around $150 from a computer data systems store.
