anybody go with the fipk setup?? im lookin in the brothersperf catalog says k&n572523-1 for 149.99 is that correct? i did some searching and many people said they got the k&n572523-2 kit, is that different then the one they show here, and where could i get that from? maybe the print is just wrong, says 4.6 03 cobra so idk, any help would be great!