When changing or lower a vehicle sometimes one or the other needs to be shortened. Usually it's the tie rod not the drag. Both can be shortened, usually the tie rod.
Death wobble is usually associated with raising a vehicle beyond its normal design. But can also be relevant with lowering a vehicle or changing angles in steering to extreme. ...Also loose components. link ends, kingpins, etc. In your instance I wouldn't worry about it till you drive it.
https://www.youtube.com/watch?v=ncTgYl7P_TE
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