Larger engine bays

The cars need larger (longer) engine bays....many of them that appear to have really large bays can't fit a simple I6 over ~2.4L...and the physical size between a 2.4L and a 3.2L I6 can be the same size (See Nissan L24/L26/L28, bored/stroked to a 3.2L)
Its kinda frustrating that I can't fit a 3.0L I6 in hardly anything...let alone a 3.4L which can have the same physical size as a 3.0L.... (see: 2JZ stroker kit to 3.4L)
Its kinda frustrating that I can't fit a 3.0L I6 in hardly anything...let alone a 3.4L which can have the same physical size as a 3.0L.... (see: 2JZ stroker kit to 3.4L)