[N5GKP]

Timing is a weird one - I'm currently working on a 530d police car with a N57 in it and the timing is 45• out and I can't get the kit on it so that needs engine out, head off, etc - that's another story though!

With regards to the sensor, it's the one sat down under the master cylinder. Absolute prick to do, no chance you'll get your hands down there unless you have a hand that has an index finger and a thumb and a lot of palm missing!
Instructions say to remove master cylinder, etc.. I wouldn't, just use some pry bars & a ton of lubricant so you don't push the rubber grommet into the brake servo.

Best of luck!