Do lower control arm reinforcement plates actually work?

LCA itself looks to be 1/8 inch. The LCA plates I purchased and welded in are approx half that. K know you didn't ask but I would also agree with pishta in post 15. Frame connectors made a huge difference in my handling. I used the boxed steel weld in type (you can make your own) and not the Car Tool that weld to the floor. Those require carpet removal, Lots of undercarriage prep and good welding skills. They do look factory though.