Just go to K&Ns web site & figure out which round tapered one you want, for example you said CAI, is your piping 2 3/4 or 3 inch? find one on the chart that fits your needs then see who has that part number. Search ebay for the part number you want. BTW the name brand piping does nothing special that the no name piping won't do except the no name stuff will save you money to get the good filter. The filter & the silicone connections vs. cheap rubber ones are what matters. There is no more HP to be had because you spent 200.00 on it instead of 50.00 regardless of filter or connections. You are just paying the extra 100.00 for a CARB legal sticker to pass inspections in some states. Just buy the damn sticker from someone for 5.00 if you need one or buy the high dollar ones used - air flow doesn't wear out intake piping.