As he said, the only Toyota brand diffs that are remotely available in this country which are the same or shorter in length are the:
RN25 Hilux - G series (8.0in CW) - 5x114.3 PCD
MX13 Corona MKII - F-series (7.5in CW) - 4x114.3 PCD
MX23 Corona MKII - F-series (7.5in CW) - 4x114.3 PCD

I think I have seen an oddity Corona MKII which had an E-series

You can see why the Corona diff is so popular, the same length and correct PCD.
Tarago diffs are all wider.

Unfortunately all these diffs are super rare and worth a bomb if somebody who knows what they have got are trying to sell it.