you have to be kidding teretonga.the spoilers on that datsun are so small that it would need to do 200mph to make any difference to cornering or braking.your whole argument is fundamentally flawed.when you increase downforce you need more power to go the same speed,its called drag.look at f1 cars,its basic physics.so if converted put these on his car and it went faster,they either do nothing to increase downforce or he fitted a turbo at the same time.if he actually did go faster i would say its more to do with how he was driving.the difference between a good lap and a bad lap is just one missed apex or braking marker.not his crappy little wings.as for using flares to cover tyres when the cars track changes,that datsun in the picture looks as stock in width as they come.only one thing looks worse than flares,and thats when you fit them and the tyres dont come out past the standard wheel arch!race cars should be tubbed to fit larger tyres not butchered with bolt on lego blocks.