Admin View forums as Usergroup

[txsbmw]

I have searched and searched but cannot find this. Is there a mod that will allow an admin to view the forums as a certian usergroup? Not like the login as user mod that is out there already (well just like it I suppose but without actually logging in as that user). Instead the Admin could click something like view forums as (then choose which usergroup to view as) and it would switch the admin to that usergroup, so permissions could be easily checked, then a link at the top as switch back to admin or something simular.