Welcome aboard! I also did a bit of searching and failed to come up with a good answer. In google images they have a number of the large "book" type kit, those fit my Kenmore, which was the last model before they gave up cams and went computerized. Mine were quite large and gray? plastic. Yours are probably smaller, you can look under the top lid of your machine to get an idea of the size.
I really like the older machines like yours -- yours is quite the looker. While bells and whistles are nice and I have vision issues where a threading assist is necessary, what we want most for quilting is a good steady straight stitch that can go through multiple layers -- and your machine can certainly do that.
Good luck on your search for both knowledge and cams.