The front section of the spring controls wrap, the rear is more of the rate & ride quality. A 440/4speed should at least have the "XHD" (aka "Hemi") rear springs. Clamping the front segment in a couple places works even with slicks. If you don't get separation (springs driving tires down during launch), then the taller snubber will limit rotation of the axle, but it's the springs' ft section that should be addressed. On my drag car that does get a lot of separation the snubber did nothing and I don't run one on that car. It uses modified SS springs & clamped ft sections.