This is the car from 2015. The turbos are in the same place (in a different angle), but the air inlet, the exhaust exit, the intercoolers, and the cooling on the sidepods are different.
From 2016 to 2017 the rear of the car changed three times. Now there is more room for the air to go to the rear wing, and exhaust exit and cooling are different.
2016
2016
2017