[SCdyne]

This question needs to be followed up with another question.

Other than for the obvious reasons why would you even want to put Nitrous on your RL?

You want more power? Get a tune from one of the many sources.
You want WAY more power? Do a Turbo swap.

Nitrous is an inexpensive solution for an engine that otherwise doesn't readily have the means to produce big power gains. When you have a Turbocharged engine you already usually have much more power available you just need to follow a few simple steps to unleash it.