I must admit I don't know much about using 8chan but you might try right clicking on one of the images in 8chan and save to your computer. Then you can right click and select properties and there may be some GPS data embedded in the image.
I'm sure some of the anons have probably tried that already, but it's not that time consuming and may be interesting.
The images have no pertinent exif data in them, not even the camera type.