At Opentracker racing, we believe the early Nova should have came from Chevrolet with a roller spring perch.
Our spring perches use sealed roller bearings as the pivot point instead of a rubber bushing. This upgrade provides a huge improvement in ride quality, responsiveness to the road, stability under braking and handling. The stock rubber bushing greatly increases the effort required for the suspension to move.
The reasons why a roller product improves how a classic drives is why we do what we do. Removing bind from the suspension pivot points is a huge gain to any performance driven vehicle.
This is a rebuild process. You will need to send in a usable set of core Chevy ll spring perches. If not, there is a $80 core charge for this product.