I worried too much, it's not that bad of an install. Yes the pyro was the most stressful. Looking back it's funny how worked up I got.
You will have four holes in your A pillar (1/8"?), nothing you can do about that.
Make sure you have plenty of time. I painted the holder one night and then did a little each night after work. I started on a Thurs. and finished up by drilling and tapping the pyro Sat. morning.
Drilling and Tapping took me 1. 5 hrs and thats being very careful. I used no grease on the bits when drilling I started with a small bit and went up till I got to the 7/16". I think this helps keep the shaving size to a minimum (safer for the turbo). With the tap I used a strong magnet that was stuck to the tap and I would go in till the shavings were stacking up then back out and remove the magnet and drop the shavings in the trash. Then test fit the pyro till it fit correctly.
I'm in a hurry writing this, hope it helps ya!