2011 Crown Victoria Police Interceptor Mods?

I own a 2011 Ford Crown Victoria Police Interceptor with a 6.4L V8 and 84000 miles. I want to know how to increase as much horsepower as power and upgraded performance as possible within a $1000 budget. I would preferably like to use performance chips and modules but I am not sure which one will work, especial for the "best bang for my buck". I would preferably like to push in an extra 65-100hp.

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