New g35 owner and i was wondering what was the easiest/cheapest to drop the car .5-1.0 inches

 

There is no "cheap" way. If you can't afford it, don't do it. Even if you found some 350z springs or a used eibach pro-kit for $175, you have to remember that this car is 10 yrs old and its been sitting in that one position this whole time. If you change the suspension geometry right now you will be replacing a LOT of suspension parts very soon after.

Don't buy a G if you're on a budget.

 

I agree but if you are still going to drop it, least expensive is Tein H Tech 350Z springs. They will offer a slight drop.