BDZ71 how much weigh are you talking? I pulled two Waverunners, put one in the bed and piled whatever other camping stuff I could in the bed. Plus I had the Can-back at the time and my Reunel bumper weighs in around 175lbs. Yes it was squatting but not bad. I couldn't believe how smooth the spring road with a load on them. The entire truck felt like a caddy going down the road. I would highly recommend them, if you aren't sure you can always order them a little stiffer. Alcan makes good springs from what I've heard as does National Springs. National is the most expensive, you pay for the name basically. I've heard some bad things about Atlas, primarily quality control issues but that is all second hand.