[Dragsinger]

Boss,

after several buildups with different brands of control arm bushings when building the Super 10 I returned to the basics and installed factory style bushings.

With the upper bushings I removed the serrations then tightened the retaining nuts to remove all slack with a very slight pre-load. The upper arms move smoothly with VERY slight resistance.

With the Super 10 the lower bushings do not have serrations. [your Nova may be different] Whichever way yours are mounted the goal is change the attaching hardware as need to just remove slack yet have a smooth movement with little resistance.

In my opinion, because of advancements with tires and track prep the above suggestion is completely acceptable.