Doing rust repair and am working in the area of where the B pillar would meet the floor, except mine is gone on that area. Does anyone know or have photos of what happens on the back side of the B pillar as it moves past the mid-bed area? Is it a square tube shape or a u-Shape? I’ve attached photos, this is the passenger side and I have it on a tip over jig so it’s difficult to get closer in. Thanks for any help