I was gonna say, I think your best bet is to just modify an new bumper. The light is a standard design and size used on trailers and commercial vehicles. I’m sure you could get someone to cut the opening for you - like a trailer supply place or whatever.
I’m in Fairfax, you can take measurements of my bumper for a template if you want. There‘s probably someone closer, but I’ve had really good luck with the guys out at Universally Modified in Sterling who don’t mind doing odd fabrication jobs. Ryan runs the front office and is really helpful.
Without a drill press you may break your wrist.
I’m a little closer than Bill if you want me to cut it with my plasma torch. If you or Jim can send me the exact dimensions (or a good to scale trace) I can cut a template for the torch to follow. Can’t guarantee a perfect cut but it should be close. I’m a little busy right now so we’d need to schedule in advance