th eonly issue is you only reading one side of the engine, that being said if you just going for the standard 3.4 set up you'l be fine. if you were to cam and add more mods then have the bung welded in the dp before the cat. theres a few better places in that same area on the sd headers to re weld the bung in.

i got the o2 and wb in the dp. Shared album - MrScottydoggs - Google Photos