I'm sure it's possible, I just don't know what is needed. If by "better" you mean "easier" then I'd go with a 4.6 from an explorer or same model year mustang. Google "Ford Modular Engine" and you'll get a listing of All the cars/trucks that use the same engine. Since They already make Mustangs with that 4.6 3v, it'd be easy to drop one in. A lot of people do the 5.4 3v Triton engine swap too. Some companies have even started making parts to modify those engines to fit our model Mustangs. Check out Mustang Collective for Kuro and Flapjack's write-ups on those.