hey guys i have a ED lsd center and 28 spline axels just wondering if it would fit my xc diff its not a 9inch, just wondering if it would fit and what ratio is good ith these cars

i know the ED is disk break would it be hard to make it disk at the back or will the drumb breaks fit the ED axels.

it has a 3.3 atm but a 302 is going in later down the track once i get a box and rebuild the 302 motor with new pistons new seals gaskets and a lumpy cam.