A lot will. Foxbodies have been swapped with turbo 4 and 6 cylinders, big block ford, and chevy, Lsx motors, stroked 302's 351's, 390's....... the list goes on and on. More importantly, what kind of power/budget are you thinking? That would help narrow it down.
2000 Mustang GT-Former giggle gas addict
1990 Mustang GT w/ Vortech V3
***resident gun idiot***