833 rebuild questions

So im about halfway done collecting parts for my 4 speed swap and i've picked up 2 non OD 833s. one codes out to be a 73 b/e body the other is a 71 a body unit. the a body unit has a blown 2nd gear and the b body one was gone thru about 10 years ago and sat on a shelf since then. My question is can i just swap the whole tailshaft from the a body unit to the b body one? and if so is there any special tools i need? very new to this and i was hoping to have a tranny to drop into this car without having to go through and rebuild one first. I will be rebuilding the a body unit eventually so i was also curious if anyone knew of a good book/manual that went through one of these step by step. Thanks in advance :)