Are you people sure that there is a requirement for equipment for a plane used to TRAIN the IMC Rating, with an instructor acting as a safety pilot, with the flight taking place in VMC?
I did my IMCR is several planes; one had a working ADF (and was used for NDB holds) but the DME didn't work so if doing an NDB/DME approach the instructor held a handheld GPS (purchased from a camping shop in the USA for $100, he was very proud of it) and called out the numbers. Another had a working VOR so that was used for VOR tracking. None of them had working instrument/exterior lights (the bulbs blew years before) so could not be used for training after sunset.
I finally finished my IMCR in my own plane on which everything worked; the only such plane (out of a dozen or more) I ever flew in.
Also I would speculate that while there is definitely a requirement for IMC flight in CAS (VOR/DME/ADF etc etc) this may not apply as fully for IMC flight outside CAS. A transponder may not then be required for example. Anyone without an XP in IMC is nuts but that's another story...