Mystery Bird

Does anyone know about these headers? Seen them on Ebay, look pretty good. The only thing I didn't like about them is the O2 sensor bung placement. I'm trying to find a good set of headers for my next project without spending the bank. I have a set of Pacesetter race version hanging around but not sure if they will be good enough for a 10 sec. car.

jrz28camaro

I to would like to know if anyone has tried these headers out