I have the Sprite one, it is a great air filter but that is all.  It is not
any better than the other K&N filters.  There is no noticable performace
increase from the "built in sub stacks".  You will get to make new studs
when one breaks (notice I didn't say if!!!) as the filters were made by K&N
Europe and one end is SAE and the other Metric.  Be sure to carry a 10 mm
wrench to remove the acorn nuts.  K&N also told me they may be able to match
up the filter itself should I ever need one.  I would be glad to swap it for
a set of the K&N filters from APT with their sub-stacks.
        Crash
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///  (If they are dupes, this trailer may also catch them.)
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