What to do with the 3.8 that you just pulled from a Euro E34 M5 to make way for it's V12?

Built for a customer in 2004, this S38B38 was completely rebuilt and modified to an estimated 395 crank horsepower.  Rear wheel horsepower was tested at 314.5hp. 

The vehicle was fitted with the late E34 M5 6spd manual transmission.