just put caltracs on my car with split monoleaf had stock leaf springs clamped with sliders and it hooked pretty good. they have a place here that they run on the straight away of a road race track. so there's no prep at all. with the stock spings I could just jump it out and flat foot it and it would go. it would do that anywhere . I took the car out last night and road around and got on it a couple times and it was just blowing the tire's I.have the caltracs set just touching no preload. shocks set the same as before pretty much 9 clicks out of 18. 69 satelite 472 13X31 quick time pros. I'm going to call calvert tomorrow. what would you set the caltracs loose or preload