Reggie's used the same DuPont paint that was used in the early '90s. They used the door to create the match, since they could see it from all angles, and get good light on it. The paint match turned out pretty nice, I have to say. They did a great job. And I didn't have to spring for a full repaint.
Here's the various coatings, etc, that were used, from an email from Reggie:
- Behind and in-between metal that will no longer be accessible, we use a weld-through primer, which is basically liquid zinc.
- On your pinch welds, we use a Wurth body panel adhesive along with the pinch welding technique, so that all of the space between pinch welds is sealed (and technically stronger) - This is likely similar to the glue that holds the roof on your M3.
- On bare metal that we have access to, we will do a 3-step POR-15 application (3-steps being, clean/degrease/etch, then paint)
- In cavities that we don’t have access to, we will use that Eastwood internal frame coating.
- We will apply 3M or Wurth seam sealer around all weld seams and flanged joints.