What diff will fit in this beast
 

ok I just put a 87 front suspention in my 69 GMC . Now we have 5 bolt pattern and disc brakes so what diff will fit in this truck ? if I can use one from a 73-87 and have to put my own perches on , do they make a kit to install panard bar ?

Re: What diff will fit in this beast
 

Yes, a kit is available to add the newer rear to your truck by adding a panhard bar and a bolt in bracket . also an axle swap may be one of the more economical ways to get 5 lugs in the rear. If you do that , you can just purchase 5 lug drums for a 71-72

Re: What diff will fit in this beast
 

x2 on just replacing the shafts.