All complete.  Finished pics will be up tomorrow.
 
 Total cost in the end:
 $0      2nd Plenum (Cheers Zuffen!) for the snout
 $10    2nd TB postage (Cheers Edz!)
 $90    Turbo bellmouths x2 (going inside air cleaner)
 $130  Oval K&N Air Cleaner plus enough K&N foam to make 3 mud covers
 $32    for a slab of boonies best for tigging
 $70    10mm Aluminium to make base and top plates
 $30    Linkages between TBs
  
 Total cost $362 but if you minus the air cleaner (which we always spend mega $$$ on anyway, one of the joys of offroad) it works out to $232, and you could do it without the bellmouths if you wanted and save another $90.
 Thanks heaps to Zuffen and Edz - massively appreciated!