Excuse  me Ben, but the statement:

"... Front facing ones also face a much circuitous route to get the ideal
airbox position which is the right rear side. ..."

Should be treated with the same dose of health skepticism which should be
accorded the traditional wisdom of the politically correct! Wrong. Wrong.

Please note that the I-4 installations executed by the factory (no direct
knowledge of the SA solutions here) all use the air box mount on the left or
driver's side rear. This includes the NA, CA and Euro versions of the diesel
and the CA and Euro versions of the turbo diesel.

In my conversion (as detailed in the archives) this is straightforwardly
implemented and operational without mishap for more than 5 years. I have sent
on a number of photos of this and other aspects of my conversion to TomC, but
the time required to adjudicate inappropriate material seems to keep him from
adding these to his web site. These photo are available to any with a stout
email server (several Megs per topic) upon request.

To reiterate, " the proper mounting of air filter and mass air flow meter is
on the left rear and is made particularly straightforward by use of a
digifant engine with throttle body at the pulley side of the engine. "

Outrageous!

Frank Grunthaner

PS: Least I offend the nanometer-thick skinned of the list this comment is
offered with a technical sense of mirth, words and syntax notwithstanding.