Your Isuzu uses the Isuzu MUA5. The bellhousing is integral with the case. No swapping.

As for the electronics, it it really is not an issue of it being difficult to make work. It is pretty close to nothing working, including engine management and all the sensors for the instrument cluster. Hacking it together will probably result in something that is both unreliable and, well, hacked.

Good luck,
Michael