Tubular Lower Control Arm Thread

I'm missing something...what's the reamer for? The jig??? The LCA houses the balljoint and the taper would be in the spindle right? Oh, btw I'm going to look at that valiant tomorrow...I'll let you know how it goes. Keep posting pics!!!
On these mopars the lower ball joint is actually located on the spindle instead of the control arm. The LCA will have to be drilled and reamed. If you would hurry up and get your car then you would know this. Lol. Keep us updated