i have a 2012 kawasaki ninja 650. unfortunately i laid down my bike and dented the muffler. the exhaust system and everything still seems to run fine but i want to fix it cause i hate seeing the dents and scratches. should i just buy a slip on or stock exhaust? ive found stock ones for less than $100 but i know i could find a slip on for less than $200. is it worth it to buy a slip on? i know full exhaust run $300+ depending where you look. any thoughts on what the best route is?? thanks!