Real traction masters bolted on at the spring U bolts with a round heavy tube connecting to the front spring bushing. They were the classics but if my memory is correct they made a street car ride like a buckboard. I have an old set of what I call slapper bars that just clamp around the leaf springs to limit spring wrap. These are not adjustable with a big rubber snubber under the spring. I know that later in the 60s (Camaros) they made some with adjustable snubbers. My question is does anybody remember how to set them up? I believe that they were set up with some space to allow some spring wrap and still allow for a softer ride when not coming out of the hole. Anybody remember the recommended "air gap" between the snubber and the spring? I'm going to have to adjust my snubber with a hacksaw.