Downforce is the force that pushes a car or an object closer to the ground when it is moving fast. It helps increase grip and stability, especially during turns or at high speeds. Full definition
The rear diffuser has also been tweaked to assist in reducing lift and producing as much as 100 kg of downforce at maximum speed. (evo.co.uk)
In addition to a Boss 302 the Laguna Seca version has Recaro Sport Seats, A Torsen Limited Slip Rear Differential, Revised Suspension Tuning with unique spring and damper rates, Larger rear stabilizer bar, No rear seats as they are replaced with Cross Car X Brace this increases the structural rigidity by 10 %, A more aggressive front splitter and a larger rear spoiler increase downforce for high speed track use. (autopublishers.com)
In addition to visual enhancement the stylish rockers also generate more downforce at higher speeds. (corvetteblogger.com)