Synergy 8009-30 - Jeep JK Front Axle Outer Shell Kit - Manual (Page 10)

17. The side to side location of the new suspension brackets will be measured from the
machined edge on the inside of the inner C, next to the weld bead. (the tip of the tape
measure)
18. Align and weld the stock upper control arm bracket. Prep the upper control arm
bracket to weld to the axle tube, grind the cut edge smooth so it fits the axle tube well.
Also grind the paint from the sides adjacent to the cut edge where you will be
welding. Once the upper control arm bracket is positioned, you can then fully weld
to the axle tube.