> This hose?
>
> http://images.thesamba.com/vw/gallery/pix/1054636.jpg
>
>
> That would be it.

 I just replaced my Spectre (aka. FLAP special) open cone air filter with
K&N Apollo filter kit. The air flow sensor sits just behind the left rear
tail light with just enough room for a filter, but not the additional hose.
 So if I run a 3'' intake hose to the right side, I can place the K&N
filter there and connect it to the snorkel.  This should help mitigate
intake noise and give me fording depth that I will never use.

So far I came up with this alternative:
http://www.aircraftspruce.com/catalog/appages/ceet.php.  It's rated to 350F
and used in airplanes for air routing.

Another option are "intercooler piping kits" which are admittedly more
robust, but also more expensive:
http://www.cxracing.com/mm5/merchant.mvc?Screen=CTGY&Category_Code=ICDK

I could go totally redneck and use this for extra heat soak action:
http://www.lowes.com/pd_328922-131-L301_0__?productId=3240915