Which ever idler arm you decide to go with, after you install it, make sure the center link ( between the steering arm and idler arm )is parallel to the ground with the front of the car sitting level side to side. Just from this thread you can see how much stuff is out there and I can guarantee from past experience they aint all the same. I have found that Moog stuff is the most reliable as far as the parallel thing is concerned. After market K frames, gear boxes, and steering arms can also play havoc in this area. If you are knocking idler arms out due to wheelies you got a suspension travel problem. A hint would be cracked / busted dust boots.