My 2009 Dodge Challenger SE Custom

I have a 2009 Dodge Challenger SE with no resonator, no regular muffler, stock wheels or a stock air filter. It has a Flowmaster exhuast system with dual exhaust / straight pipes. Under the hood I have an SRT Mopar Air Filter. The exhaust tips are made by Silver Line. It also has Boss Motorsports American Eagle 18' Chrome deep dish wheels w/ knock-offs on them. The stock horsepower is 250, but with my mods it has 270 right now. My next goal is to supercharge the car and hopefully get 310 horsepower altogether.