let us know what you find, so far I’ve found everything I’ve needed on amazon.
new calipers, rotors, pads, starter, filters, fluids….
Steve, I see where you previously had mentioned that RZR900 brake pads are appropriate for the MRZR - do you have a gasser or diesel? I just want to make sure before ordering anything. I've created a spreadsheet of part numbers for the MRZR and where they're cross compatible with commercially available items, so I'd like to make sure I have the right pads listed.
On another note, with the help of a RZR group on FB, someone swore that the SuperATV Rhino2.0 CV joint was of the correct diameter and spline count - turns out it's not, so I'll be returning this one.
Someone else suggested reaching out to East Lake Axles near Tampa, FL. I had a lengthy call with them today and they swore that a diesel Ranger axle would be appropriate. I'm not sure, the pics sure look similar enough to the factory axle, so I'll give it a try. The spline count and length seems right. I'll let everyone know how it goes once it gets here Wednesday.

While I had things apart, I noted that one of the radius rods was bent. A few minutes with a heavy vise and a cheaper pipe had it straightened back out.

The as-issued mirror that came with mine was also cracked all over, while the mount for the mirror below off of Amazon isn't correct, the mirror itself is a direct replacement.
Mirror
