I was just noticing in the Genos catalog that Mag Hytec has come out with an updated version of their front diff cover for 03-09 trucks. The changeover was June of 2012. You might look at the picture and see if you have the new one or the old one. I had to trim almost a third of the fins completely off and the edge of the shelf to clear and mine is still marginal. I do have the old one, though. I even sent mine back to Mag and they trimmed it some... didn't help, though. They were good to deal with and would have bought it back if I had wanted. At the time there were no other choices. My problems got worse with the updated steering parts. Best of luck.