I have a 6 inch lift on my 01 and when i have the truck in 4 wheel drive and start to get up to near highway speeds i get a vibration in my front end and a weird almost grinding type noise. I talk to a local mechanic about it and he said it was due to the angle the front shaft is at due to the lift. He was not sure if there were any kind of mods or aftermarket shafts that could correct this problem. Anyone have any ideas? Any help would be appreciated.



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