Chinook RV

My 2002 Concourse was ordered with only a fan where the AC normally goes and one in the bathroom. I’m going to have an AC installed where the fan is. I’d like to put a Maxxair fan in directly in front of the AC unit. Has anyone cut an opening in your Chinook? I think I could extend the wires from the current Fantastic fan to power it. I just don’t know exactly where to have the opening cut. I know year and models like mine came with a fan in front of the AC unit if one was installed at the factory. Thanks