To further muddy the water... I'm told (only the messenger here...) that it is possible that a filter that will fit, but it not spec'd for your particular application may be designed for diffrerent pressures.
Such as a car oil filter mentioned in this thread that FITS a motorcycle, was designed for very different oil pressures. Not sure that is/is not the case, but one more thing to consider.
YMMV,
Barry
Its ok to muddy it up, but several of my Zx14 friends have over 100,000 HARD miles on their bikes and they've used Purolaters for the life of their bikes. Also i know some that have gover over 10,000 miles (1/4 at a time drag strip) at red line the whole life of the bike on Purolaters. I'm a fan of KnN but I can only cite the Purolaters for anything over 32,000K miles.