Originally posted by Sybersport:
K&N - apparantly they do NOT make this kit for the non-s/c xterra's. Anyone know if this is true?
Not true. They just started making the ones for the SC version that are FIPK. The non-SC FIPK versions have been out for a long time.
You didn't say what year X you have, but here is the info for K&N FIPK for a 2002:
57-6005 57-6010 (SC Version)