Performer RPM Air-Gap + Holley 750 + 4" air cleaner = Stock hood clearance?

I'm thinking about upgrading my Torker & 650 DP to an Air-Gap and 750 DP. I currently have a 4" K&N filter and Xtreme lid w/ no hood issues. I dont know how much room to spare I do have though.

Anyone running an Air-Gap under their stock hood? If so how how tall of an air cleaner can you run w/ no issues?

Thanks!