Frontier rear end

Can anyone tell me if the rear end from a Hardbody will fit on a 99 Frontier?  I think it should bolt in no issues, the frame looks the same as my old Hardbody from what I remember anyways. If anyone knows I would apreciate the help, thanx in advance.
 
BTW, the truck is stock and I will be keeping it that way, so a 5 lug Toy axle is out of the question.

from what i know they changed on some hard bodys is the size of the drive shaft bolt holes becuase i tried to bolt up a 92 drive line to a 86 rear end and the 4  holes on the yoke to the differencal where differnt sizes  , im pretty sure a 720 is the same as a hardbody rear end and they probally uesd them in the first frontiers in 97 or 98 when ever the first models came out so i think they would probally be the same so that nissan wouldnt have to design another rearend the gear ratio might be differnt but i dont know