I personally would not do this conversion unless the donor car were nearby. This is so that you can get all those little parts. The cruise control can be made to work but MAKE SURE YOU PUT A CLUTCH SWITCH ON! Without it, the engine will rev out of sight when you kick in the clutch with CC set.

The driveshaft may be a different length, thus the need for the donor car being nearby.

The end of your crankshaft may not have provision for a pilot bearing. MAKE SURE you fabricate one or the input bearing will be toast in a few miles.

Also there is a mounting plate that bolts to the engine and then the transmission bolts to that. You need to get the one off the manual transmission engine and bolt it in place on the recipient engine BEFORE installing the flywheel.

This will be a good and worthwhile project IMHO, but take your time, don't take shortcuts and do it right.

Good luck,