i spent the winter with my cousin in Collorado a year back and hes has a anni but swapped his bonnet for a custome made vented one but he placed the vents up towards to the windscreen and designed some fins to direct the hot air onto his windscreen, reason being is that when is snowed heavily the Kamei grill at the front forced the heat of the engine onto the windscreen, kept it nice and toasty so when it was hit with snow he didnt get a build up of snow on the wipers and it just water being wiped away as apposed to bigger and bigger piles of snow, seemed to work and didnt look like there were any vents until you got right up close. cost him about $200 but for a discreet and useful mod i'd pay for it lol