Here to help . . .
Join Date: May 2010
Location: United Kingdom
I'm glad I could help (my PM box is still smoking from the use though).
Anyway, yes it will be that far down. From what I can see from your picture (and know on the subject) you have located the starter motor and the sensor is underneath it.
If you look at the picture above, you will see where the sensor goes and then see the hole in the block plate where the starter mounts. That gives you an idea of how to break your arm to get it to fit. It is possible, but as warned, its not easy. Once you have located it OK, it gets easier from there.