Hi
I looked at Reno boxes years ago, pretty rare down here. If the G50 proves to be not an option I might go to one of these
http://www.subarugears.com/ not as heavy duty as a G50 but with a weight saving on the chassis and transmission one might survive.
I like doing this sort of thing
https://youtu.be/spgKInSH1D0 and this
https://youtu.be/uhgVgzf5oD0 not sure how a Subaru box will handle it.
Steve