This is the only picture I can find of it. I built this back in the mid 90s on an F body Aspen. I wasn't too diligent about documenting things back then because I was just building hot rods.

Looking at the lower edge of the arm, you can see the shock mounting cross bar slightly protruding from the arm. I added tabs down the edge of the arms, drilled mounting holes for mounting and slide the shock up through the arm, after opening up the hole on the top of the arm.