Lets just think of this from a philisophical view for a second.........
-This company did not even take the proper amount of time, probably a day or two, to even get the fitment right.
-Then they pimp the work out to China.
-When you do get them, you have to weld in an 02 bung.
-There is a high probability you will also have to cut and weld them to get them to fit.
-The durability is unknown, but my guess is they won't last long.
In my opinion, most people are purchasing these purely on cosmetics. So wouldn't that $200-300 be better spent on just getting the factory headers rewelded if needed, and ceramic coated? I mean, if you are at a point where the factory headers have hit their limit, then I would assume you spent enough money to get there not to cheapen out at the end over a matter of $300-400.00 with a reliable known product.
Those are just my thoughts on the matter.