I found out there was a Dirty Pair pachinko machine released in 2002, which was then ported to the original Playstation. It was put under the Hissatsu Pachinko Station Now brand and was volume #9! There is more in depth information on a page called PSXdatacenter.
I thought the art in it was really cute so I took on the project of ripping the sprites, piecing them together, and animating them.
They are excited!