OBX-R Header?!?

Okay, my friend who also has an s-13 just got OBX-R header and the thing seriously looks like some serouis kind of race/nascar header. I was wondering if anyone knew anything about this header cause it's all stainless with a chrome polish, it also has this weird piping design that has the first three pipes meeting together at the collector and the forth pipe goes all the way back and is welded to the first pipe. I don't know if that makes any sense at all, but I tried. Oh, and the collector is 2 1/2" I.D.

tell us what your friend thnks after its on the car. obx haeders are pretty well priced and i've looked into them. we wanna know how it sounds and if there a notible differnce in hp.

Okay man, he's having a local shop do the instal with 2 1/2" piping to the rear with no cats no resonator and an Apex'i N1 exhaust, when it's all done, I'll try to upload a sound clip and tell you if he feels a difference.