Side-by-side dual extruder mount that fits on an Ender-5, or anything with 2020 or 2040 and 42-40 extruder steppers. I took the geometry from VincentM's damper as a starting point.
I printed just the mounting plate first, then realized that it really wasn't as sturdy as I had wanted since its PLA vs Aluminum. I added the rear support clip, which ties the backs of the motors together and stiffens up the whole assembly. M4 bolts and t-nuts to mount to the frame.