Rear end feels loose and seem to step out under braking from high speed runs 200kmh(120mph+). Any ideas? Only started having this problem after replacing my diff mount bushes but i dont think its got nothing to do with that.

 

What are the current specs of your alignment? It sounds like maybe you've got too much toe set in the rear..

 

i agree. that would be the first thing to check.

 

run 0 or 1/16" total toe in the rear.....that should do the trick