If you're using the straight 6 you may get away with two joints and one shaft,but if however you go the V8 route you will probably need three joints,two shafts and a support bearing.
Like the guys say,parts are easy to come by,it just depends how deep your pockets are.....
I went for Borgesson stainless steel but there are cheaper alternatives,here's how I did
mine.This also links to other pics.