Want to change out the curved trigger on my P365 with OEM flat. The FCU has a manual safety. Are there any additional steps required to complete the new trigger installation on a FCU with a manual safety? Checked web for videos - lots of good videos on removal/install on FCU with no MS but couldn't locate any on a FCU with a manual safety.

You need to remove the manual safety lever from the FCU so you have easy access to things like the trigger bar spring. On the left rear side of FCU, there is a pin on the manual safety that ride in a wavy section that allows for the manual safety position "clicks". Lifting the positional pin with a tiny flathead will allow you to rotate the manual safety past the wavy capture area so the pin comes out and you can then take out the safety lever. Make sure you install and remove manual safety in a clear plastic bag or something as that tiny pin can eject and get lost really easy.

Xer0 thanks for the information. Was not sure how to proceed in this process and wanted to make sure before starting.