Help. Live axle Fury.

Hello all.
I have a live axled Fury  that has s seriously damaged rear axle. As I am in the US and Escort
parts are very rare over here. I am considering using a Toyota or Alfa Romeo rear axle that
have similar track widths. I have no jigs and will be transferring the dimensions from my
axle. One of the arms that carry the right trailing arms has torn away from the axle so I will
not have the accuracy I would like.
I am thinking of using rod ends on the right side to give me a modicum of adjustability to
compensate for setup errors. I understand that there is a binding in the rear should one use
4 rod ends on both sides but I think it will be OK with one side only. Am I correct?
I understand all dimensions are critical but where should I  be particularly accurate. Any tips
on how to approach this and what toe and camber numbers should I shoot for?
When welding the axle should I strip it or does the extra material help stabilize and help
minimize distortion?
I found  seem to be bottoming the rear springs (180 lb. 8" long springs, 12" shocks, about 3"
travel) causing the car to oversteer suddenly and spin out. Should I install a 9" spring or
change over to a longer shock?
I will appreciate any feedback and advice.
Thanks,

Dermot