ORIGINAL: skratch
there is a k&n filter that will fit, but if you are going to replace the filter why not go all the way and get the screamin eagle kit? you can get the individual parts very cheaply and then add the hd 0800 filter and have the 'old' screamin eagle kit for a fraction of the cost. there are several other posts on this, but if you cant find them, give me a yell and i can get you the part numbers.