Vibration between 25-30 mph

DZL1 I was wondering what kind of wheels you have on that truck.

Theyre Eagle 129/130 style wheels.

Heres a link:

Hope that helps.

DZL1.

When the rear was lowered should have been some angled axel shims installed and a spacer for the center driveshaft berring to help with drive shaft angle, are they there? Not 100% on this..