To tighten up the front you could get some lowering springs and a strut tower brace. Be sure to get a brace that clears your manifold though, some aftermarket ones need special attention.
You might want to take your car to a tire shop to get it inspected. I noticed much tighter steering when I replace my rack and pinion.
Chances are your rear control arm bushings (both upper and lower control arms) are shot and allow lots of travel. That is understandable for the age of rubber from 1987. Polyeurethane bushings are available and greatly help noise, traction and life.
You might want to take your car to a tire shop to get it inspected. I noticed much tighter steering when I replace my rack and pinion.
Chances are your rear control arm bushings (both upper and lower control arms) are shot and allow lots of travel. That is understandable for the age of rubber from 1987. Polyeurethane bushings are available and greatly help noise, traction and life.