The most changes made by Imsa can be found on the exterior. Bigger spoilers in the front and rear, the sideskirts are also changed. Isma used a lot of carbonfibre, the spoiler for example has been totally made out of carbonfibre. All of these modification make the LP640 look even more brutal, but also provide some extra downforce.
Under the bonnet the car gained a few bhp, just to get a little bit quicker. With these modifications Isma made a true beast out of the LP640!