This guy Jim, he's pretty hard core. He's not just you're standard mechanical engineer, his specific area of expertise is material and welding, that's all he does. It's funny how real professional welding makes anything any of us (or even shops) do look like childs play. The rest of us can sit here and oogle over the prettiest looking manifold made by say Full Race. Where he'll take a look at it, their material choices, and their process and completely rip it apart like it's garbage.
Long story short, if Momin gets input from him I'd listen