Bhintz
1/2 ton status
got my lift about a month ago. 4 inch superlift w/ blocks in the rear that have the pinion angle cut into them, but I still have a bad vibration in the driveline, its really bad at takeoff and isnt that notice while at 40-50mph. any ideas? and little different question whats the best weight gear oil to use and will synthetic make that big of a difference?