Just like every panel in the car it all started with making defrost HVAC plugs 
for windshield, side windows and fresh occupant air. But before that started the 
dash bottom was ground to get rid of heavy build up and rid of any sharp fibers. 
Also the mounting lip against the windshield frame was evened up. Secondly 
mounting indents where filled in solid with resin so that it would not collapse 
when the dash is mounted. Holes for bolts where drilled through and 
corresponding holes in the windshield frame where predrilled to accept bolts. A 
proper threaded fastening will be made for proper fastening. 
 
Now that the dash was prepared, to avoid plaster from sticking, bottom was taped 
over with masking tape and recovered with newspaper pages so that the plugs can 
be pulled out more easily. To make it easier and smaller, the runners where made 
in 2 parts left and right and a separate 3rd part for mating box was made to fit 
in the middle. The box will then be sitting on top of HVAC mixing box 
controlling temperature and flow of air. 
Molds where made using the plugs and respectfully they where used to make actual 
ducts for a clean fit to the dash. More in plugs / molds 
 
Mixing box started as a rough plug made to fit between upper tunnel rails. Part 
of foam from dash plug was used as filling material to build up majority of the 
volume. 
 
Once the ducts where fabricated and trimmed, they where fastened to the dash 
  
........   more to come 
  
 
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