The "BTF Upper Link Mount Kit" was designed to make easy work of mounting your upper links to the frame the right way (so that the bolt is parallel to the ground).  You will receive two sets of brackets (enough to mount two links).  The brackets are laser-cut from high-strength steel plate.  They ship with 1/2" bolt holes so that they can be drilled to whatever size you need.  These brackets were designed to work with 1"-1 1/4" Heims