Hotchkis 22105 "Tri 5 Chevy Front Sport Sway Bar" - Manual (Page 6)

Mark the hole centers on the lower control arm with a marker. Once the holes are marked,
you can disassemble the end links from the bar.
Drill the holes using a 3/8” drill bit. Remember to always wear safety glasses when drilling.
Install the end link bracket onto the lower control arm with the supplied bolts.