great video. If I had access to a lift, I would be all over this. But to do it on ramps.....I have a N55 which is apparently easier given there is one large downpipe vs. 2. Still they show you unbolting the steering rack, but not why or if/how you move it for access.
It appeared the clearance for the clamps and mount to turbo and front o2 sensors are the really difficult tight spots. The rear setup seems easy.