No problem, here is a public link to the FUSION360 design.
the same propulsion unit is still being used, been riding it a lot. At least 30 times. No leaks, shaft coupler still working. the disadvantage is that you can’t disassemble it to change motor/gearbox without sawing up the tube and gluing it back together. We did that when the first gearbox got stripped.
if you are having problems editing to fit the profile I can help you out. if you have the naish profile.
also the design can easily be edited to fit 60mmOD 56mmID tube. It fits tighter around the SSSmotor.