1. Engine and Transmission:
* Engine: Sourcing a suitable V8 (likely a 4.6L from another Mustang or compatible Ford vehicle) and its associated components (intake manifold, wiring harness, ECU, etc.). You'll need to verify compatibility with your specific year and model.
* Transmission: Finding a T-5 (5-speed manual) or Tremec 3650 (stronger 5-speed manual) transmission is crucial. Again, compatibility is key; you'll need one that matches the V8's output shaft.
* Clutch, Flywheel, Pressure Plate: These components are specific to the transmission and engine combination. Incorrect parts will lead to failure.
* Driveshaft: The length of the driveshaft must be appropriate for the new engine and transmission combination. Likely requiring a custom driveshaft or a used one from a similar donor car.
* Engine Mounts: The V6 engine mounts won't work with a V8. You'll need V8 engine mounts, potentially requiring modification to the chassis.
2. Modifications and Fabrication:
* Transmission Tunnel: The V6 automatic's transmission tunnel might need modification to accommodate the larger V8 manual transmission. This often involves cutting and welding.
* Crossmember: The transmission crossmember likely needs replacement with one designed for the V8 manual setup.
* Wiring Harness: The existing wiring harness will need to be modified or replaced to accommodate the V8's engine control module (ECU) and the manual transmission's components (clutch switch, reverse light switch, etc.).
* Pedal Assembly: You will need the pedal assembly from a V8 manual Mustang to accommodate the clutch pedal. This will require modifying the firewall and fitting the new assembly.
* Exhaust System: The existing exhaust system won't work. You will require a new exhaust system designed for a V8, possibly including headers.
* Cooling System: Depending on the V8, the cooling system might need upgrades to handle the increased heat output.
3. Other Considerations:
* Computer Programming/Tuning: You'll likely need to have the ECU programmed or tuned to work correctly with the new engine and transmission.
* Gauges: A tachometer is essential for a manual transmission. You might need to add or replace gauges.
* Labor: This is a significant undertaking that requires considerable mechanical expertise. Expect to pay a substantial amount for labor if you're not doing the work yourself.
* Cost: The cost of parts and labor can easily exceed $5000-$10,000 or more, depending on the availability of parts and the level of professional help required.
In summary: Converting a 2000 Mustang V6 automatic to a V8 manual is a challenging project requiring significant mechanical knowledge, specialized tools, and a considerable investment of time and money. Unless you have extensive experience with automotive modifications, it's highly recommended to seek the help of an experienced mechanic specializing in this type of swap. It's a much more complex project than it initially appears.
