What's the easiest way to get the 05 G35 Coupe to 300hp

I just got this car and love it to death, but it would be great if i could get 20 more hp to get it to 300 without spending a lot. Does anyone know what the best ways to go about this is? Cold Air intake wouldn't be enough, would it? What's a good deal for exauhst types?

CAI, exauhst, and a chip.

so wats not alot of money $ under $1k? if so, nice exhaust off ebay, k+n intake or something, and chip would put u at around $1k if u shop rite. oy and the exhaust would giv u 5-10, intake, 10, and chip 5-25 depends on how expensive it is. so 30 horse for $1k, ayyy