For $1,000 I'd cut the hole in the airbox, venom cat from the group buy and get an HP tune from a decent tuner. IF that was all I was going to spend on my car mod wise. If I had plans for further upgrades then I'd keep saving and work towards a level I wanted to end up at as the single job. At least with that you won't be buying anything now that you need to replace later (unless you go a full exhaust)