I have a 2007 1500 Ram 4X4 quad and was looking for a good Monroe shock with good dampening/rebound characteristics. It seems that not all sellers, not even the Monroe catalog, have a Quad Cab 1500 Ram 4X4 so choosing the right shock becomes a gamble. Stay away from Rock Auto because their catalog is the worst and you will pay for their mistake. But anyway I bought 2 Monroe 34515 shock absorbers for the rear of my Ram and they fit perfectly. I'll get fronts soon. I used to use Monroe SensaTrac shocks because I've had good luck eliminating "death wobbles" or "bumps," but Monroe no longer makes them. I hope the Gas Magnums are just as good and will leave it at 5 stars for now.