84 C5 Automatic swap to Mazda 5 speed

[Canadianice]

I just by luck acquired an 86 bronco II with a newly rebuilt Mazda 5 speed in it. Since my C5 is getting near the end of its life before needing a rebuild I wanna swap the 5 speed Manual in. I have a few questions for anyone who has tried a similar swap. Can I use the same cross member where the tranny bolts up with the 5 speed that is used on my C5? Also will my current drive shaft, a double Cardin shaft, have to be lengthened or shortened? Also the only real thing I'm unsure of is the neutral start switch and if I can use the flywheel, pilot bearing, Pressure plate, and clutch off of the 2.9 and hook it up the my 2.8?

any input would be awesome.