I have a 1995 GSR Hatchback with 120K miles that has a stock suspension.

Compared to my friend's 2000 Honda Prelude, my GSR's ride is much harsher. When I drive at freeway speeds (70mph) and hit little bumps, the it's much harsher than the Prelude, and the car also feels like it destabilizes every time I hit one of those little humps.

Does this sound normal? What can I do to improve the ride?

Things I've considered:
1) Shocks : I don't think the shocks aren't blown as the car doesn't go bounce up and down.
2) Bushings : Could torn bushings cause a harsher ride?
3) Springs : Springs don't wear out do they?

Any other suggestions would be helpful.