be a hell of a lot cheaper at your local muffler shop. if you can weld it of course, even if the shop welds it up, i bet is far less then 50 bucks.

a bung and a flange cost me 15 bucks at my local muffler shop. iirc at the time i was building a U bend delete, i even got a foot of pipe with a flared end, all for $20. then welded it at a friends house.