I just installed the TBO's.. Probally the last set that wasn't installed; They had been sitting in my closet for almost 2 years now, I had bought the Noltec A arms prior to this, and let me tell you its a huge difference going from the bushings of the Box style Adj arms to the needle bearings of the TBO. The car is much smoother and I can tell the suspension can go through its range of motion freely. Just a extra bonus that they never slip unlike other arms in the market.
I recomend these style arms over the "Stillen" style anyday.