Here's a pic of the mirror and the cell. While you're at it fit two extra handles on the sides (bunnings bathroom section
) Top one is the original one. As PMd there's only one way all this can go on a C11 as there's not much room. The back of the cell has reinforcements in the cast as well which you don't want to drill into so it doesn't give you much choices about where you are going to drill the holes for the fans and the three bolts.