get a custom after market catback exhaust which is around 300 to 400 depends where u get it from and a simota intake system which will be around 200 to 350 depends if u want cold air intake or short ram intake but i say get the cold air much more beta .. these mods will be easily under 1k with easy power gains if u get a bit more money you can get headers as well .. but IMO get those 2 mods 1st ..