Hey Neil,

  I haven't been bringing up your pics of the engine mounts, etc. because I
have this *glacial* dial-up internet connection here at my house out in the
sticks, but it sounds like you are well on the way.
   A suggestion, as I see you mentioned connecting your air cleaner somehow.
In my inline four, the conversion was done when I got it, but the convertor
used thin-wall aluminum  irrigation sprinkler pipe to fabricate the intake
runner from the airbox over to the plenum and it looks like it might have
been fairly simple for him.  The end result is quite sturdy to work with
when you must dink around with it.  My air cleaner is in the stock
position(?) and the 'duct work' crosses the engine compartment at the front
right along the edge of the access hatch, with another snorkel out of the
aircleaner, made of brake ducting,  going up into the right side rear body
vent for cool fresh air.
  If your install is similar to the I-4/Diesel one that I have, don't
neglect to connect the engine mounts across under the motor.  I came very
close to having a huge headache when my right side (the longer one) motor
mount sheered off the bolts at the engine block, due to it's propensity to
twist without the cross brace to defer some of that force..

  Don Hanson