Swaping rear ends

I just got a 84 mazda b2000 "Sundowner" rearend I took measurements and its is 2 1/2 inches shorter than my stock rear end on my 91 mazda b2200. I got this rearend because my 20's didnt fit..Is there anyone who has done the swap before or dose anyone have any suggestions on how to hook up the brakes..

I would guess that the brakes would be the same for the most part. Mazda really didn't change a whole lot of things between models.