'72 GMC 1/2 ton Rag Joint replacement

[Goose]

Ok guys, I have read many previous discussions on rag joint replacement, but I can't determine if I need to drop my steering column or what to give me enough room to remove the rag joint. It seems the '72-'70 are different than the '67-'69 versions. So for the '72 which is the best method to get the room I need to replace the rag joint? I didn't want the truck down for days while I messed around doing the wrong thing. Thanks for any help.