FYI

No need to replace the lower arms from the 5.1 kit. Just drill out the aluminum insert. Then you can use a 16mm button head screw going from the outside just like the 5.2. I actually like this better than the new arm. The aluminum insert feels like a more solid mount versus the countersunk screw in plastic. Not sure why AE redesigned the lower arm in the first place. Anyway, no need to wait on the 5.2 arms with this easy mod.

Jim