Turbos and other induction should affect engine size

[Elouda]

Theoretically, you don't have to have a Turbo in the engine bay, and the piping does not take up a substantial amount of space.

Either way, most induction systems affect height, and engine height wasn't a thing in the game until recently. So maybe this makes it way into a bounty, maybe not. It makes it more difficult in that most induction systems do not have a fixed location. Designers just cram it in wherever there is space as close to the engine as possible. We'll see.

I would argue piping does take a fair bit of space, atleast comparable to the various valve types. The impact is mainly on either height or width, I would probably split the difference between the two unless you want to get into specifics depending on engine layout.