i see....maybe i'm just not that familiar with obx because us honda guys have comptech/dc/mugen/spoon/etc...Niss200SXGTR said:if i am not mistaken, OBX is a name brand?!. well, I like the 1 piece header design, simply beacuase of the fact of less possibility for gasket screw up.. i was figuring sliding it from underneath was my option..