What brand filter and what is the filter height that you are using ? Also , does your setup touch the hood at WOT ? Which hood do you have ?
We run a 2" drop base with a K&N filter element, and a low profile top. Hood is a stock hood with the GS scoop section added. It's a tight fit.
i am not sure what filter or base we used. The base was a standard drop base after market piece. Currently, the nitrous plate is under the Carb, so there is not room for any air cleaner.