[NOT A TA]

Now it's time to modify the dash structure for clearance for the gauges. You should put some masking tape around the edge of the CF panel because you will be putting it into the dash several times to check for clearance of each gauge. Do not try to assemble the pieces of the new panel yet. ONLY USE THE CARBON FIBER FACIA WITH ONE GAUGE AT A TIME TO CHECK CLEARANCE.

In the pictures below I put white paint on the areas of the dash framework where you will have to cut the plastic away. It is much easier if your dash is out of the car but if it is in the car it can be done, it's just more of a pain to work in there.

You can use a fine toothed hacksaw blade with a hand held blade holder to cut the plastic and then break out chunks as you work your way across the area where the panel fits into the dash. Once you think you've got it set then install one gauge with the retaining bracket screwed onto it in the CF facia and place the facia into position to check clearance for that gauge. Repeat for all gauge openings.