I called carparts.com, they were not sure about which filter "sock" was right for the 0880, so they called K&n and got back to me with the recomendation that I use another one--I think 4770--not sure of the number, but same as 0880, except with filter material on th end as well as outside. Just flows a little more air than the 0880.
Again I don't remember the exact price, but about $60. with the sock.
Vaughn