Even if it was the correct 5.0 HO motor (it isn't) or the right trans (it isn't) it's not just a drop in and go for a V6 car. You'd need a harness, fuel system, computer, all the sensors etc... etc...
Scrap it or fix the clutch and drive it IMO.
2000 Mustang GT Steeda #0048
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.