Update: Got the truck aligned today and the grumbling went away. It must've been that the noise and vibration was from the BFG AT riding on the shoulder lugs at low speeds.

For the record I have Doestch Spindles on my 06 2WD Sport and I didn't need any special alignment caster/camber kit.

 

where did you buy ur spindles from? looks good by the way

 

Thanks, spindles are from Suspensionmax. You can buy from their website or they also sell on ebay.

 

My spindle snout snapped off my doestech, and I bought them from suspensionmax.com too =x

 

Go any bigger on the tires and you will need the special alignment kit.

 

Yeah I've seen snapped snouts posted on both Fabtech and Doestch spindles. It usually involves jumping or very dry looking bearings.

 

Yup, usually the bearings. Keep a good eye on those suckers.