JunkYard Alcohol

.. priceless
Actually you have somethings all wrong, I guess you've been hanging around the wrong crowd. First is you will detonate far easier with water than alcohol. Next is the reservoir doesnt need to be airtight, tho having it vented will let the alcohol evaporate.. you dont want this to happen
No huevos needed.. it will work so much better when you shoot the stuff straight in. Drop your fuel pressure a little, pump some alky into the motor.... and up the boost.. If you spray too much, it will become a little lazy, but wont KR. And based on your cubic inches, i'd be playing with the M15 nozzle.. at least.
The Mustang guys for some reason have this belief that water is the way, and after months of seeing them blowing head gaskets, burning holes into pistons, saying that 10:1 AFR is rich and safe, and a lot of the other nuances which have no basis, I've come to the conclusion its due to the fact they dont monitor knock retard like we Buick guys do. See what makes our little motors scream and stay together is we watch for one thing above all else. And thats knock retard. On a Mustang there is no knock sensor, so what you dont know wont hurt you.
There wouldnt be a 10 second Buick hadnt it been for the knock sensor. When you can cross this belief, you will come to the dark side. And learn how to keep cast pistons, cast cranks, 2 bolt blocks, living at 600 HP.
Peace.. Hope I made some changes in your thinking.