agree w paulie.
From the website, Option 2 is $175, yow! We used to buy entire Mustangs for that, & I'm sure you could get another steel hood for that if worried about cutting your glass one. The only risk with the glass hood is they're already kinda flimsy so you'd have to judge it you could cut the braces.
The rule I like to use is, assuming a single quad and a 14" air cleaner, use 1" per 100hp. So since 14*pi ~ 14*3 ~ 40, that's about 40 sq in per 100hp. So for a healthy 400+ hp engine I like to run a 14x4 filter or about 160 sq in.
You don't really NEED that much, but anything less than that starts to cost you a few horses, then a few more. K&N wont hurt as much cuz they flow more.
The factory used about 1 inch per 140hp on a 14" filter, sometimes more, so that's more like 28 sq in per 100hp.
About the only way to tell is try it, but I guess you cant really try the taller one unless you cut the hood first.