That they do-and I'm glad to have mine installed and leak free. But, if the OP is as pissed off as he is about the perceived lack of workmanship on the headers pictured, he might be just as irritated about the lack of straight weld beads on the Hedmans as well.
I did have a minor issue with sealing on the #7 primary here a couple weeks ago, but it was a gasket issue more than anything. My only complaints about the Hedmans is the cost to have the attaching exhaust fabbed in, and the amount of time spent changing the collector gaskets should they blow out. But, I've become pretty good at doing them :D