When you have roughly $3k to spend on a sedan?

Do full bolt ons. Maybe a couple of the modded fellas will chime in with specifics...

save some more money and go FI =).

Spend a couple k more and get a superhcarger.

Save your money because this economy is gone.

spcaer/intake manifold, exhaust, testpipes/HFC, tune. If u are AT then more agressive Final drive is the way to go. After these mods be ready to kick 07-08 g35/g37s a$$.

Save more and boost it.

Or good lightweight wheels/tires, coilovers and a plenum spacer.

this is pretty much spot on. and right about the budget mentioned.

thanks guys this really helps. i would really like to have another 2k to spend on a supercharger but all the suggestions so far have help'd alot

yup, sounds about right

You need to decide whether you are going to go FI or stay NA

that determines what mods to do

Yep. Many of us have spent money on NA mods just to have to remove and sell them because it wasn't enough and we had to boost it down the line. if you're not sure, stick with mods you can keep with mild boost applications.