Just bought a 46 GMC, has a orig,, 50 gmc engine, missing all brake hubs and brake parts on rear. so, what to do, it's a 4 speed, like to keep that, should I buy a late model rear end ? do they make a / adaptor for 4 speed to use with newer open drive shaft rear ? thoughts please. ??? since it's no longer original,,, engine gone. a late model rear will not bother me,, so guys,,, please help with what to do ?????