Suzuki Jimny tow-bar?

Anyone else here with a towbar on their Jimny?

I've got the official Suzuki one with the detachable forged tow ball and
shaft. The towing bracket assembly is of very high quality but the
ball is too far off the ground for most trailers. As it is a single
forged ball and shaft then it can't be lowered.

Does anyone know if this is a standard towing bracket assembly so that
lower height tow balls are available? I don't want to have to fit a
totally different towing bracket to cure the problem.

Thanks,
--
Chris Morriss