dude, you can't replace the rear quarter yourself. This requires some major body shop work. Your car is unibody construction. Meaning the majority of the car is one solid unit. To replace the rear quarter, the original one needs to be cut out first and the new one welded back in. You are looking at around 8k of parts and labour at least at a reputable shop.
Gloss Black Grill, Side Marker, Trunk Logo, Exhaust Tips; Reflectors Delete; M Performance Aero Kit
P3Cars Multifunctional Gauge