I did this conversion with a 2.0 twincam efi into a 1.8cvh carb both sierras on 91/92 reg years J+K plates the twincam engine was an automatic unit

From what i remember this is what was needed........

You will need the MT75 gearbox, you will need the propshaft also and a flywheel and go to ford for the small spiggot bearing on end of crankshaft area it is needed.

convert the wiring loom and ecu into the car and a petrol tank and all i had to do was add a fuse into the fusebox in engine bay for the fuel pump to run.

I am positive i had a slight issue with the vacuum pipe that runs from master cylinder but i had a blast in that car for what it was

hope some of that hekps