Does a rx-8 transmission fit a rx-7 engine?

The RX-8 transmission can be adapted to fit an RX-7 engine, but it requires custom modifications. The RX-8 uses a different transmission design and mounting points compared to the RX-7. Additionally, you may need to address issues related to the bellhousing, driveshaft length, and wiring harness compatibility. Overall, while it is technically possible, it's not a straightforward swap and would require significant engineering work.