* Transmission Type: 1972 Chargers used entirely different transmission types (likely a 3-speed automatic, 4-speed manual, or possibly a 727 TorqueFlite automatic) compared to modern Chargers (likely an 8-speed automatic). These are completely different designs, physically incompatible in size, mounting points, and bellhousing.
* Engine Interface: The bellhousing, which connects the transmission to the engine, is totally different between the vintage and modern engines.
* Electronics: Modern transmissions rely heavily on sophisticated electronic control units (ECUs) and sensors that are absent in the 1972 car's electrical system. Integrating the modern transmission's electronics would be a massive undertaking.
* Driveshaft: The driveshaft length and connection points would be completely incompatible.
* Subframe: Even if you could somehow make the transmission bolt up, the subframe and chassis of the 1972 Charger aren't designed to support the weight and stresses of a modern transmission.
In short, while some parts *might* be adaptable with immense fabrication work, it's not a practical or realistic project. It would be significantly easier and more cost-effective to rebuild or replace the original transmission of the 1972 Charger or use a compatible transmission from a similar vintage car.