How to make a 2012-16 Chevy Impala run from a low 15 to mid-13 sec. ¼ mile HD

All mods under ideal conditions made my car run (in fall 2016) a 13.54 at 106.26MPH Best trap speed was 106.9 MPH. The car races with a full interior on gas pump with street tires. Basically I race what I brung (minus the dog). For all parts P/N, please view the video regarding the overall suspension and brake replacement upgrade downloaded earlier this winter. This video was recorded on spring 2017. All performance parts are back on the car.