@laverdi
I think I would use a chopper actor to achieve this. I would use it because it makes it easy to crop to the correct size, and position the original image within this crop.
I am sure you could use IzzyMap in some way, but then you have a harder time mapping if needed.
In the image below, I have cropped off the bottom 120px for output... You can just as easily take it off the top or anywhere between (the original has a thin Black border all around the white).