Late model rear end

The disc brakes require a larger master cylinder with a seperate resoviour (with the big block wedged in a 65 I barely have room for the master cylinder I currenty have and it is tiny. As far as narrowing the long side my original idea was just to narrow one side and use two of the passenger side axles, the problem with this is the axle shaft is tapered at the end and does not allow enough room to cut it and weld the flange back in, my next thought was drill out the pins pull the axle shaft directly out of the carrier, cut it down and weld the axle shaft to the carrier, can't seem to get the axle shaft out, although I am sure with a little work I could. When the opportunity to use the ranger rearend presented it self for me it just made sense. The width is already correct and I can use my existing master cylinder. With a small block in there I would have gone with the explorer rearend, I just don't have the room. The difference between the two rearends is they're both 8.8" ring gears, the explorer has a little thicker axle and a 31 spline where as the ranger has a 28 spline. which adds minimal strength, but allows higher load capicity, which I don't care about.