Front sway bar install question

[Captmatt]

Picked up a front sway bar and mounting brackets at the salvage yard today. My lower A arms do not have the factory holes drilled. My plan is to mock in the sway bar using the foreword mounting brackets and then locate where the holes need to be drilled on the A arms. I'm thinking that I need to put weight on the suspension to properly locate where the A arm brackets need to be. Does that sound correct ? All help appreciated !!