its big with the 240Z and all the drifters out here. Its kind of wierd though because the bottom of the window is a low pressure area, most guys assume that this mod lets air out the top while it actually does the opposite.
Thats why all the mustang and hot rod guys use a reverse cowl hood
i'm not a big fan of it because to appreciate that, you'd have to know what the mod was. but if you run with a crew of guys who would think that's cool, then go for it.