See "Differences of the remix compared to the original" section.
Important: you will need to modify your aluminum bar for this remix. You only need a drill and hand saw to do this. The modified bar is in the .step file, and the change is as follows:
Find the end with the NOT-tapped holes
Mark the spot 16mm forward of the existing rearmost hole (that's center-to-center distance, not edge-to-edge)
Drill it out to the same diameter (the CAD lists it as 0.2 inch)
Cut the bar approximately 2.5-3mm behind that hole
You'll also need two 22/27mm o-rings. They can be had on amazon. Here's one link, but I'm sure there are others as well: https://www.amazon.com/dp/B07FR612J7
I don't have a ton of bandwidth to field "is it compatible with X?" questions or how-to-build questions. Follow the original Stagecoach guide and you'll be close enough to figure out the rest on your own. I'm also not uploading STLs for this one because it's just too many.
The author remixed this model.
Major Changes (that I can remember):