My thoughts on the Rear sway bar, do it for fun then get rid of it.
When you need your car to turn and not oversteer its nice to know it will.
I cant imagine how my car would have handled and I never drove it like this but when I got it had, two rear bars (1 standard 1 aftermarket) and helper springs. I tested it on the track with just the standard rear bar, and with nothing but standard rear springs with lower blocks and it was quicker and easier to drive with out the bar.