Hotchkis 80390 TVS System, Stage 1, 67-72 C-10 Small Block, 4'-6' Drop, 2WD - Manual (Page 44)

Next use the longer adjustable bar and mount it to the driver side frame bracket and
the passenger side lower shock mount bracket. Choose the holes that allow the bar
to be as low and as level
as possible based on your ride height. You will need to
adjust the length of the track bar to match the holes up. Again, apply the supplied
grease to bushing surfaces.
Once all of the suspension members are in place, measure the distance between the
inside of the rear tires and the wheel wells. Adjust the track bar (lower one) in
or out to equalize the tire gap. Once adjusted, fully tighten all of the hardware.