I got my Doug Throughly header back in the day for around 300 bones. We have the even port available. But I need to drag a D50 up to have a paired port made and a jig from that so we can have them. But on a good note DG Headers is getting a mandrel CNC bender so soon the header pipes can be all one run to the collector. You can see his work in the for sale area in the sticky area.