A cutout shows what goes on inside a bell housing! They best way to learn how to drive a manual is to learn what’s going on inside the transmission! The huge cutout in the bell housing makes it super easy to see what’s going on with the clutch and pressure plate. Watching the pressure plate and throwout bearing go in and out really puts things into perspective! The car used for this test is a 1998 BMW 323is with a ZF310 trans! That wobble doesn’t look good but maybe that’s why they tore it apart!