The Soft Rides are a 2-leaf set, one full length thin leaf and a second leaf that is shorter and thicker. Nice thing with the kit is you have several combinations available for adding the 2 extra leaves, either in place of existing leaves or adding to the existing leaves. This allows fine tuning of the lift and ride. What you want to avoid is the AAL that includes just one short, thick (and stiff) leaf. You'll get the lift you want but the ride will suffer. There are some fairly decent single leaf AALs that are not too thick, don't recall the brands. What you want to check is that if the AAL looks like an arched version of the overload leaf on the existing pack, it'll be very stiff.