Curious if anyone has replaced a sunroof motor on a 93 300E who can advise.

My sunroof motor started a high pitched noise this morning (the unit next to the power antenna motor). The noise comes on after about 2-5 minutes of driving. My sunroof still "slides" open and close but stopped "tilting" open and close after the noise problem started. I figure the sunroof motor needs to be replaced because of the annoying noise.

I found a replacement motor online (picture attached) but need some advise about the replacement procedure. Can anyone help? Thanks in advance.

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