Although the "schnorkel" might appear to be the limiting factor on fording,
the ignition system will suffer first, then the muffler will fill with water
after the motor stops, and of course if you're deep enough the cabin will
leak up through the battery vent and ...

The schnorkel tries to keep particulates out of the aircleaner system and
does a very good job of it coupled with the labyrinth dust trap and the
massive paper air filter.

The K&N is no match for the stock system for delivering clean air.

FWIW I have several Syncro air filters (Cherman) for sale at a reasonable
price yet to be determined but probably half of dealer price.

Interested?  Pmail please.

pensioner