pretty easy to do...I am in the middle of the conversion myself...You need the tranny w/ a t-case that will bolt up to it, new front and rear drive shaft, flywheel, clutch, bellhousing, clutch pedal assembly, linkage (if a manual clutch setup), master/slave cylinder if hydraulic setup...Shift fork, throw out bearing, flywheel cover...those are most of the parts...If you need, I have MOST of the GM part numbers for those parts..
Not too bad though...let me know if you need any more help or part numbers....
Chris