Been researching for a little bit and I am finding all sorts of opinions. Who knows the best place to put a new 02 bung for my wideband?

I have all new aftermarket exhaust from the header back and I would like to get this installed before I install the new downpipe (3sx generic), rear precat eliminator (3sx), and single shot exhaust (ips).

There will be no cats on the car... I hear its best to have the bung welded in at an angle higher than 3 and 9 o'clock positions and to have it located where the two pipes converge to one. Is this true? Where is the best placement for the most accurate readings?

Thanks

John