Sorry I didn't fully answer your question. I am running stock springs with my cal tracs. I put the recommended preload in and it jumped like a frog. So I halved the preload and it hooks hard. I just have the rearend lift that all stock abody suspensions have. Its wasted et in my book. Don't get me wrong a lot of you run with big power using cal tracs and I love mine I think its just time to upgrade.
