Clarification needed on camber kit requirement

Ralphatron

Whats up guys,

I tried searching for this and found a few threads with similar discussion but it's still extremely unclear to me.

For a Z that's dropped about 1.5 inches in the rear and is showing visible negative camber, I believe will need adjustable camber arms like these Z1 camber arms.

What I'm unclear on is if I ALSO need to purchase aftermarket eccentric bolts like these SPC camber bolts.

The description says something needs to be filed down with a rotary tool, and I find it hard to believe that this much modification is needed just to get the rear camber in spec.

I'm hoping I can get away with JUST the camber arms on a car that's only lowered 1.5 inches instead of ALSO getting the aftermarket eccentric bolts that apparently require permanently removing material from the car but everything I've found when searching doesn't really clarify this.