Side skirt extensions and rear diffuser side pieces

[Piggy]

Surely you wana come under the beam and tank to the floor of the car?!
That huge exhaust gap is guna kill the aero a bit too, no?

Boxing the exhaust in is probably going to melt something though.

Not with the right materials.

How do you think Mercedes run 1000degree exhaust in a F1 car without it setting on fire.... oh wait...

seriously though, that will make such turbulence without boxing it in slightly or as Ruan said, blown diffuser for the win!