There's a shop called Perle Guitars, they cut some nice pickgaurds.
They are a bit pricey, but he does good work. He even has a free printable template so you can find the exact cut style you need to line up with your guitar, and he can customize one for you of you ask.
I did the exact same thing to one of my guitars about 2 years ago.
This is not for a 570 but a 50, so it needed the pickgaurd.
For your case I recommend telling him you are doing this for the 570 and he would need to make the pickup selector wider.
You may also run into issues with the pots not being tall enough, but that would prob be fine.
You may also be able to get away with holding the pickgaurd on with tape instead of drilling holes, so you might even be able to ask for one without holes pre drilled.
Just a thought.