I can't remember exactly how I did my fit as it's too long ago, but I used the auto rear mount with modification to suit.
Also used the auto bellhousing with an adapter plate for the LT77 and a hole machined in the side for the throw-out lever and a bracket to mount the slave.
It now holds the Jag 4spd overdrive box, but needs to be reworked to fit the Cressida box when I manage to dig the car out from under the mess in my garage....