No I haven’t but I’m sure it’s not great for it. Wish there was a good tire carrier bumper for these but I haven’t found one that can be sourced in the US or shipped reasonably.
Kaymar's are excellent, but the wings may be too long for the short wheel base 70 series. ExitOffroad offers Dobinson rear bumpers for LWB 70 series, which are decent, but the side wings would need to be cut down/modified to fit a 73.
Dobinsons Toyota 70 Series Rear Bumper with Tire and Jerry Can Carrier - Exit Offroad
Dobinsons 70 series rear bumper with swing out jerry can and spare tire carrier, designed for long wheelbase (LWB) models
exitoffroad.com
But there is the very nice US sourced/made bumper available for a 73 from @cruiseroutfit with a wait. This is probably the most thought out, user friendly rear bumper on the market:
Updated rear bumper pics (was Project LXXIV)
I will follow up with a question. After switching over to these LEDs in the bumper from the stock incandescent bulbs, I'm getting what I now understand to be "hyperflasing" where the turn signals flash faster because of the reduced resistance on the circuit. Has anybody found a LED flasher relay...
forum.ih8mud.com