Width.
ok here's the intake.
The intake is orientated as it fits on the head unit, looking from the driver's seat. It can be rotated, I have it pointing down on my car, as in the picture.
Looking at where it slides on to the head unit, from the face that sits against the head unit on the right, the width is 66mm to the back edge
and 85mm from the bottom of that face to the back edge. At the bottom of the picture, the outside diameter of the intake is 75mm, where your filter pipework fits on.
If you can take that photo and put some arrows or lines on it, I can give you the dimensions that correspond ... I think that would be easiest ..G