putting a ford 5.0 in a 72 Dart

The OP never said what his fabrication skills are, so I'll take the leap. If you are contemplating the Coyote swap, do you have the welding skills to make it safe? What is your knowledge of braking systems and making them completely safe and functional? What are your "true" fab skills and, last but not least, how deep are your pockets? Any cross breeding of power plants and bodies get really expensive really fast. Even with my MOPAR/MOPAR stroked small block bracket car, I quit counting what I had in it when it reached to 30K mark. Think long and hard before committing to a project such as yours. The whole reason I wrote this is, look at all of the projects that show up because the original builder either lost interest, or ran out of money. They will "never" recover what they have invested and most of the time it sours them on building projects. I'm not dissing the OP for his thoughts of being original and different, all I'm saying is, "be cautious of what you dive off into".