Pros: keep the axle from the body, increase suspension range. got them used and cheap.
Cons: older arms, thus not greaseable, not adjustable.
Comments: I bought a puzzle piece 5" lift kit off a guy for $100 the kit came with a lot of goodies, so these lcas probably only cost me $10.
These work well, In my opnion, they have lots of clearance for axle movement.
For some reason I can't get them to quit popping, I must need to mess with the stock adjusters.