Yeah Dez I've looked high and low and this site these are on has tons of k&n filters all at great prices. I think there's like 3240 different filters and accessories for k&n alone. They also have other brands aem and spectre to name a couple. There's also smaller sizes for guys running the stock air box with sblt500's adapter just gotta do your own digging for those. I'm looking to fab my own custom air box that removes quickly to leave the filter still rigidly mounted so thinking of making it to fit an 8".