My car is fully Poly-bushed front and rear, has adjustable TCA's, a complete Turbo Technics front adjustable ARB/tie-bar assembly with a thick Crossmember, adjustable rear tie-bars, rose-jointed rear ARB and was properly set-up. Yes that lot did improve things, but the torque-steer I get would be enough to guarantee that anyone that stole my car would most probably end up in a hedge within the first 5 miles.
I know that a Quaife ATB diff would improve things, but I am not quite sure if I like how they drive. I like the oddly controllable yet unpredictable feeling I get from it. At least I have an idea how to sort it out, whereas with an ATB diff, it all becomes a little robotic.