Be gald to help but my Dakar bike is now enroute to Argentina.
Have a look at this thread, near the start of it are photo's from one of the first Aussie guys to do the conversion.
http://www.advrider.com/forums/showpost ... ostcount=6
http://www.husaberg.org/index.php?na...r=asc&start=15
We followed his lead and are now on Mk III setup that we used on the Dakar bike, its the best with its own tap at the bottom of the subframe tank to control usage. I will be using the subframe tank as my reserve tank leaving it full and off unless needed.
we only use the one breather at the top and loop a hose back along under the tank to T into the main front fuel cap breather hose, but lots of options with this, just do what suits you
we actually use the breather that is closest to the ECU the one marked not needed and dont use the other one, this then gives a flatter route exiting rearwards for the breather hose.
it is very tight under the bottom to link the 2 tanks together but can be done with a coil of hose to allow enough hose to have movement in the front tank and get accesss with your hand.
CRITICAL ISSUE
make sure you flush the subframe a few times with fuel after putting the fittings in before putting back on the bike, it will have bits of plastic and a powdery coating that needs cleaning out. On some of the early ones we did we had the injector getting blocked, the OEM in-line filter in the tank is not good enough by itself, so we use a CanAm quad bike external fuel filter and more importantly one of these
http://cgi.ebay.com/ebaymotors/HUSABERG ... ccessories
and since then have never had any fuel contamination or blockage issues
the fuel pick up and transfer is similar to the photos on the thread
in January will take some photos of the Dakar setup, its really good now !
it is a little slow to fill the subframe tank but not that bad, on one bike we put another filler cap on the top left just behind the seat but it only saved say 30secs a fill