So I ended up getting the Airmass (Yeah, it's Airmass not Massair my bad). I tried to do research on it and I could barely find anything. But what I do know is that it was made by an American company who took a shot at making import headers. They didn't do too well just because overseas could make them and sell them for cheaper, so the USDM stuff didn't sell too well. However, what I could find of them I heard nothing but good things.The cool part is driving around with the exhaust directed right at your face.
Alex, any info on the header? Knockoff or not? Just curious.
So I ended up getting this complete header (also coming with a test pipe), shift linkage, dual bend shifter, and all Si motor mounts minus the t-bracket for $140. A steal, if you ask me.
EDIT: Picking up the block tomorrowwwwwww