Thats the extent of what I know, more or less.
What about the difference in steering location/steering arm placement?? MII is front steer rack & pinion, Falcon is rear steer worm and sector box. Don't forget bumpsteer considerations.
I'd suggest looking into this at a 60's Mustang specific site as the front suspension is the same as the Falcon, there will be more people with experience in modifying them.
I have heard of the Granada spindle being used on early Mustangs to get 5 lug and disc brakes, just needs specific tie rod ends/machining. Supposed to be a simple bolt-on.