The parts of the pillar are welded torgether and then the seam is opened with thin grinder wheel.

The roof is about 50mm longer

I made the piece so I can weld it with TIG. Then I don´t have to grind as much as with MIG weld. Less weld -> less grinding -> less heat, suits me ;)

The filler pieces for the b-pillar.  The cavity is for leadeing the roof panel to pillar.

The piece was little lower before the welding (and after :/ )

Welded! Looks worse than it is. My goal is to finish the job (almost) with out filler.

A little more massaging needed..

Eyeballing with paint. I used 3 different spray paint to get the color near enough.