To be honest I would stay away from the dual cone filters and stay with a cylindrical. I lost 15 + HP on the dyno with my setup. The stainless box I have seals against the hood and gives the air time to dispurse water before going through the filters. The tubing is another issue, if you can't find a dual setup with at least 3 1/2" to 4" tubes you'll lose HP. I've been there and have the numbers to prove it. Get 4" tubes and a cylindrical filter so you can't go wrong. I'm in the process of building a dual f-body filter setup with a 4" TB outlet.

Hope this helps.