Originally Posted by redfox
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.
+1 To add to this, you also need to paint match the surrounding pieces. Definitely not a good choice if it's just for a couple of scratches and dents.