Your question is bad on its own.
You want to increace power right? So there are several options.

Increasing revs brings most wear and tear on any engine, its costly and gains are small.

Artificial induction

Nitrous - to fully take advantage of this power adder, really good exhaust flow is needed. And Renesis certainly is not best in this. Also its been found that nitrous is harsher on engine than other types of forced induction.

Supercharging is costly, inefficient and rather thing of personal preference.

Turbocharging wins hands down when you know what you are doing.

Simply said, for major increase in output, turbocharging is most economical way.

 

data on a statement like that is always helpful. I'll wait here while you find some.
say what? you're getting this information from where? In one stroke you negated all the benefits of Nitrous and at the same time called the exhaust of the 8 restrictive. Outside of the cat, what are you talking about?

The pettit guys would probably disagree with you, with good reason.

so turbocharging isn't harsh, mysteriously fixes the restrictive exhaust you spoke of earlier, and isnt costly? Good to know that it must be magical as well.
So completely wrong.

In order of ascending costs

1. Nitrous (cheap, easy to self install, can be done with no changes to the ecu)
2. Turbo (expensive, need to be good with tools to self install, needs either a piggy back or preferably ecu tuner, supporting mods to ensure reliability) With so many people going FI, but doing it half assed or not realizing the costs involved, there are usually pretty complete turbo kits FS. This brings the overall price down just a smidge lower then SC.
3. SC (expensive, need to be good with tools to self install, needs either a piggy back or preferably ecu tuner, supporting mods to ensure reliability) Same as turbos but since there are fewer SC kits out there, there are fewer bargains to come across. You can still find them, but due to supply i'm going to call SC the most expensive option.
4. Engine swap. Most expensive option by a mile

For anyone looking to do anything with their engine (nitrous, turbo, SC, etc) make sure you come up with a realistic budget. Anyone who's been on this board for any length of time can rattle of a dozen threads where the OP started out with grand plans and then either disappeared or had to sell due to lack of funds.