I thought the whole point of buying from bimmer brakes was so you wouldn't have those kinds of issues....
My ebay headers had the O2 sensors located right, but still had to slightly tweak the exhaust pipes to line up just the same.
2003 BMW 330i ZHP
ESS Twin Screw Stage 2 - Wavetrac - Headers - Magnaflow - BMW Performance Intake and SSK
Turner Motorsports Reinforcements - H&R Spacers - Powerflex - StopTech