The SLP one will fit. Those guys should know that it fits. They just went from a K&N to blackwing. The SLP CAI boxes use a 7" cone filter. I recommend you get a dry filter. I have an amsoil one EaAU3570. This came in handy when I was looking for a replacement.

http://www.amsoil.com/products/ea_fi...U_Features.pdf