I own a VZ with an Alloytec 175. I would like to do the 2 hole mod to my air box, but i have a few questions surrounding it. Before you flame and tell me to search on the forums, i have... HEAPS what would be the best option out of: - 2 holes w/ stock air filter - 2 holes w/ k&n panel filter - any of the above, except with a MCAI shroud which i have seen a few guys do. is the shroud necessary? (if so where the F do i find one?) Cheers.