Just a little tip before you do. Stick something, probably some cloth or the like in the 2 restrictor plate holes that lead to the carb side of the restrictor plate so no plastic shavings/dust gets in there. Anything that does get thru there you won't be able to remove and could get sucked into the carbs. Then once done do a painstaking cleanup of the box in the filter area to get every spec of dust out.
Also, to get max flow dremel the bottom of the filter after you cut it out to enlarge it to the same size as the top and so the hole is smooth and oval shaped the same as the top. Then dremel the bottom of the airbox to match leaving the little stops that stick up and hold the bottom of the filter in place. I've seen some other who posted pics and the holes weren't as large as could be. And if you're gonna do this it seems wastefull to not get all the flow you can. Good luck. (oh, and get a UNI or K&N if you don't already have one)
