If anyone is interested on a really good BMG geared clone. It’s got the Bondtech dual gears plus its geared to use a pancake stepper. Highly recommend the adapter plate to be printed in PETG.
The files you posted have a mounting plate that seems like it’s designed to attach to another piece. Is it possible to post the link to the component that the fans attach to?
This was 4 and a half years ago, so it’s a good bet that this is intended to attach to the MP3DP v2, or maybe even the v1. (Looks like a v2 in the video, but I dont knkw how different it is from a v1.)
Chances are it attaches to the default carrier plate. IIRC the MP3DP v2 used an MK8 extruder by default (that’s what mine has.)