Ridiculous and wonderful at once. This harkens back to when pipes were a competitive product in a different way, volume sales and a war of the patents. The holdover is the twin bore through one stem of which I have one -- but with the twin bore, there's virtually no added weight or bulk. Yes, this twin stem deal is tempting, but other than showing it off and letting it collect dust, I don't think you'd get much out of it. Looks like an exhaust manifold.