well if budget permits...a set of dampers and springs of the appropriate setting for your ride...would be good....
if you change only the coil springs....u'll have to go for something which matches ur stock dampers...else....on most occasion a swap of aftermarket coil springs would kill the dampers prematurely....
erm well, there are local suspension fabricators who can service and recond stock dampers...but most of the time it'll cost 80 to 100 bucks to recond a 80 to 100 bucks stock damper...so wat's the point?
happy modding