2012 GT500 gains

Hi all,

I have a 2012 GT500 currently with a catback exhaust. I am planning on doing the following mods within a month. How much hp gains can I expect? How much would that affect acceleration (0-60)?

CAI
Headers
2.6 Pulley & Idler
Overdrive harmonic balancer pulley
Twin 65mm Cobra Jet throttle body
Spark plugs
Heat exchanger
Tune

Thanks in advance