All I know is that my body guy decided to bring in someone else to do this portion. He said the guy is a nuclear welder and the most experienced he knows. He wanted to factor in flex etc to make sure the paint would not crack. He assured me 100% that it would last and that I would be happy with the end result. Given the work so far, I trust his judgment. And as I said before, it's always a plus when the guy doing the work gets really excited about something like this.
Thought I would also share an update on my other project car. The feature in Performance BMW magazine is finally out. US copies should be in stores soon.
If anyone never read the Petrolicious article, here it is too.
https://petrolicious.com/articles/this-engine-swapped-six-speed-sedan-is-the-m7-that-bmw-never-built
For any who don't know, it's a 2001 BMW 740 M sport that I got from the original owner. 38k miles. I had a friend build an M5 S62 V8 before another friend swapped in the rebuilt engine, ESS supercharger, M5 6 speed, M5 diff with 4 clutch upgrade, 750 rear subframe with upgraded brakes, Brembo front BBK with 2 piece rotors, Bilstein HD shocks, H&R springs, UUC sway bars, modern BMW navigation/idrive, wrapped up with a custom dyed interior from tan to caramel/black.