I got a chance at landing a 3/4 ton rear complete off a 01' GMC truck. Not shure what gearing is in it. But I know it is stock. It is off of a friend of mines truck whick he recently rolled 4 times! Yikes! He's ok cept for a few scrapes. God bless seat belts. 1st question, Will it swap in to my 88 blazer directly? and 2nd What kind of price would be average or good to pay for this unit? Any info is greatly appreciated! Thanks!