Will a 5.0 V8 Ford Mustang motor fit in 1999 Ranger?
No, a 5.0L V8 Ford Mustang motor will *not* fit in a 1999 Ford Ranger without extensive modifications, and those modifications would likely be far beyond the scope of a typical home mechanic. The Ranger's frame, suspension, and engine bay are significantly smaller than those designed for a Mustang. You'd be talking about major structural changes, custom fabrication, and potentially needing to modify the Ranger's transmission and drivetrain as well. It's a very complex and expensive undertaking.