I just realized I never posted anything about header design. A while back I contacted Burns Stainless and got some header design input from an engineer using their X-Design software. Turns out that the ideal runner lengths, primary, and secondary tube diameters for the twin scroll turbo header matched something that was already on the market. So I saved myself some time and just bought the 4-2-1 header from @
AceHeader-MT. This weekend I was able to finally get the new overripe built. I ran out of argon so its only tacked but the big chunk of the work is complete. Extremely tight but it fits.
I think its going pretty well so far for my first headers. This project is quite the learning experience.