340ci vs 360ci engine

Well I kinda figured that I couldnt do that so I guess I was right haha. So 360 well I know 2 other people that have 360s that they modded so I'll see what they say about it. So do I need to buy a new rear? Put a BB rear in or can I keep the SB rear then put the BB rear in after I get the car drivable?


what rear is in it now? if a 7 1/4 then yes i would put atleast a 8 1/4 in that baby but i really prefer a 8 3/4