I have single adjustable QA1 on the front of my 73 Cuda and love them. I did have to go to Camaro shocks as they are a slight bit shorter and work better as my car is lowered at the front, the standard e body QA1's were basically working on the last 1/2" of travel, each click on the QA1's I notice a difference in the car, I have 1.06 bars