[M1iFiNmC]

Dogman while I agree with you, it really depends on hitting shit. She's got an IFS system so it's tough to diagnose without having the truck in front of me, and I'm not a mechanic, but I do know suspension systems.

Zap have your friend put a jack under the cross member and lift up one side of the front the end. Not too much but an inch or so, and put a crowbar under the tire and lift up to see what the ball joints do. Is there's a lot a play/give. With IFS, mileage, and a suspension lift, my guess it's shocks. Most lifts come with ok/shitty shocks.

Zap you do whatever you want, but that's my guess. Get some Bilsteins 5100 series models and you'll be fine.