 Nearly the entire front section of the car underwent a redesign, with the most notable changes being a new wheel pod design, as well as revised positions for the brake ducts and mirrors.At the rear, the wheel pods were also redesigned, and tapered sharply at the end, resulting in the car gaining its unique rear wing support design.Early on in testing, both cars initially featured a side exhaust, although during the Roar Before the 24 tests, one car was subsequently altered to run with Periscope exhausts, to evaluate the effectiveness of the concept.