i use the airbox.. i was also worried bout the size of the snorkel..
ive cut the front side out of the top of the airbox now.. so theres a big hole in it.. so the air can go in via the snorkel.. or via the hole at the front.
The area the airbox is in is pretty well shielded by the stock pipes (if u use a blitz style intercooler) so it keeps alot of the hot air out. when i stick my hand in the airbox the air is kinda cool, so i dont think its letting to much hot air in..
oh ya she also gained 4kw on the dyno