ok i have an 89 rs with 305 the front suspension is nice and smooth but the rear suspension feels like there is none at all. i have speed bumps in my neighborhood and the front goes over them nice and easy but when the back hits it feels like im hopping a 8 inch 90* curb.

the rear has brand new shocks...the car doesnt squat in the rear either i just dont like the extreme rattle and vibration from every little imperfection in the road

 

Kinda like a pick up with the bed empty? Put weight in the back and see if it helps.

 

yes exactly like that...

im thinkong of maby going with springs off some other car or air shocks in rear to controll the height and deal with the stiffness...i cannot make it over speed bumps without going at a crawl as my exhaust hits for some reason it hangs down but doesnt budge so when i hit the exaust its like slamming on frame for somereason