* Bolt Pattern: The Ranger transmission uses a different bolt pattern than the Mustang. This means the transmission won't physically bolt up to the Mustang's engine.
* Transfer Case: A 4WD transmission like the one from the Ranger comes with a transfer case to split power to the front and rear axles. This transfer case is not compatible with a Mustang's rear-wheel-drive setup.
* Length: The Ranger transmission, especially with the transfer case, is generally longer than a Mustang's rear-wheel-drive transmission. This can create clearance issues with the driveshaft and other components.
* Electrical: The Ranger transmission has a different electrical system and wiring harness, which won't be compatible with the Mustang.
Alternatives:
* Mustang-Specific Transmissions: You'll need to find a transmission designed for a 1989 Mustang with a 302 engine. Popular options include the C4, AOD, and 5R55E.
* Transmission Adapter: While it's possible to use an adapter plate to try and adapt the Ranger transmission, it is a very complex and potentially unreliable solution, not recommended for most applications.
Before you attempt a swap: It's crucial to research compatible transmission options for your specific Mustang model and engine. Consult with a knowledgeable mechanic or transmission specialist to determine the best course of action for your project.