Understand that Toytec HD springs are intended for those whom have installed, or plan on installing an aftermarket armor bumper/tire carrier to compensate for the extra added weight. I mean, really... If you're going to have a fat ass, you're gonna need a bigger pair of pants, right? [MENTION=100689]Metalmantr[/MENTION], I would suggest you contact Toytec and ask them if they will swap them out for you. I am willing to be that they will, free of charge. They swapped out my rear Bilstein 5125's for 5100, even though I had the 5125's installed on my Runner for nearly two weeks. Something to think about. That is, unless, you have plans on installing a CBI rear bumper/tire carrier, or something.