Transmission change

Hello everyone! New to any forum tbh. This is my first one. I have a 99 mustang gt with 133,xxx that currently is undergoing a engine rebuild do to a spun bearing. She has a few mods done as well as cams. But it’s a auto and I wanna know how hard is it to swap it to standard? As well as the exact parts I’ll need if you can list them. I have a doner 96/97 new edge that’s a 5 speed. Will that work? I appreciate the help. I’m very mechanicaly inclined as I’ve done all the work to this car myself.
 
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