I have a 1996 Polaris Ultra SP 680, and I want to raise the front end up a few inches. The top of the front bumper is only 15 inches from the ground, and the other sleds that I have measured are 17 to 20 inches off the ground. I have the front springs preloaded as much as I can, and I loosened the front limiter strap to take some weight off of the skis. The shocks were rebuilt 100 miles ago, so they are okay. If I can't raise it any more with the shocks and springs that I have, can I put longer shocks and springs on it to raise it up a few inches? Thanks for your help.