save yourself some money and drill/tap the blower case itself right in the neck.
there's also no reason to do two nozzles, the blower is going to direct it where it wants anyway. the only reason you'd do it in the LIM is to make sure you fogged the LIM and had really, good even distribution. you being supercharged doesn't matter about one versus two nozzles. you're going to be running the same amount of meth anyway.
however, you didn't ask about the cost versus benefits of spraying meth, which is a whole different story...
