I just installed mine. Stableload quick disconnect style. I could have maybe gotten one in the rear and none in the front without lifting the receiver hitch. But I went with three on the rear and two on the front. I of course will have to lift the rear of the truck when I want to use them. But I will only use them when the camper is on the truck so not a big issue. I haven't tried them yet but just might throw the camper on today to try them out. I called their tech support and they told me no issue with having to jack the rear to install the wedges so that's what I did. Torklift if you are listening I would supply two different size bolts for the main plates that go through the low thick spring. I had to cut a 1/2 inch off of the two front bolts. I still had plenty of thread left to install the nuts. I had what was needed to cut them and a grinder to clean them up. Some people may not and it could be a real pain for them to find the low profile bolts provided.