SummitRacing.com sales adapters either in the 3" or 4" sizes so you can use a cone type air filter while still retanning the factory mouning brackets. you have to done some trim on the adapter and some on the AFM bracket and use longer bolt, ie the bolt for the AFM must be long because they will also hold the the adapter now. If you our still following me. Everything is still in the stock location and if you need to you can put the air box back on over the air filter if you have to , so it should work for all of you in Ca. :D I had some pics a while back I'll try to find them. When I bought mine is cost me 415 plus S+H.