I've edited your PSD file to make it 1920x1080 - enlarged a bottom part height, monitor window aspect is intact.
BTW it is downloadable somewhere on that page? Or did you asked the author for that PSD file?
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As for your file with arcade controls:
1.
This file resolution is too low - it should be 1000px+ in width to match that overlay resolution
The result will be not that great - sharp cabinet and blurred controls
2.
It's the preview of a image that can be bought from shutterstock.com - it's a good news and a bad news:
bad - it's illegal to use it without buying
good - you can pay to get it in higher resolution
3.
the perspective of that controls doesn't match the perspective of a cab (the cab is a flat front view)
so it is A LOT of work to merge this two images and have a decent results
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If you want my opinion - it's totally unnecessary to add that controls. And you can use that bottom area to display various information.
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