For stuffing 295/50/15 in my 73 challenger, I found a 66 Satellite rear housing and axles. Pressed on new taper wheel bearings,my original chunk with a new sure grip unit, friction modifier,Dr. Diff 1" relocation brackets, and u joints in pefect shape.At 25 to 30 mph, get a modeate vibration felt mostly in the steering wheel, center console also vibrates.Anyone else experience this?