'90 Civic Si Info...

Fairly good unibody around the suspension so usually that is ok. The bushings may need replaced and if you switch shocks the rear bolts like to break. Other than that check for rust or rot on the rocker panels below the doors and rear quarters like to fall apart. That is the chassis i used for my 500 whp drag car and never replaced any bushings and it was tight as new. Best of luck :bigthumb: