Here a few photos of the angle of the boots. Sorry for the bad photos. It's difficult to fit a camera in there.
Photo 1 is cylinders 1,3
Photo 2 is cylinders 5, 7
Photo 3 is cylinders 2,4,6,8
Photo 4 is how I handled routing the plug for cylinder 4. Also it's much easier to change plugs for 2,4,6 considering that side is very tight. (Those holes are much cleaner now as that was a rough cut and that wire is covered in split loom to make sure nothing pinches the wire)