Hey all, 
I have recently purchased a early 260z , and with it came a 5speed transmission and r200 differential from a '78 280z.I would like to achieve a possi rear end before I do the swap. 
  
So please excuse my ignorance , my knowledge of differentials is obsolete. I wouldn't even claim to know anything after reading a bunch of topics about differentials on this forum. 
  
So I was hoping someone could point me in the right direction.  
Thanks Daniel