How much horsepower does my charger have?

I have an 08 charger with a high performance 5.7 hemi, cai, throttle body spacer, a set of headers, a comp cam, dual thrush 2 chamber mufflers, and my cat cut off and the 91 Oct cai tune on it from my Diablo predator tuner. Stock the hemi has 320 HP so how much would I have with all the upgrades