How does 68-70 Charger A pillars go together?

[RXTREME]

I know there’s three different parts that all go together to make the a pillar from the cowl and door hinge panel. I have the three parts saved on AMD website for each side. Just trying to figure out how they go together.

 

[eldubb440]

the exterior part you see spans from the drip rail to the windshield bed

the interior part spans from the windshield bed pinch weld to the interior pinch weld

and the third piece that holds the weather strip completes the triangle from interior to drip rail