Original Equipment Rear Sway Bar = $125
After Market Set = $300+
Install on O.E. bar Driveway 1-2 hours max
Aftermarket at least twice (2 Bars)
The OE bar is already balanced with the O.E springs,shocks,and front bar.
Sway bars will make the ride rougher for the ammount of handling that you get more than any other item.
Springs may be variably wound (soft on the little stuf/hard on sway and the bug stuff).
Shocks may even improve the ride on the little bumps.