So I just received the hks axle back exhaust and hi flow cat for my 03 maxima. I want to change out the piping from the flange of the cat to the flange of the axle back (b pipe)? Should I just have a shop mandrel bend some piping from their shop or should I try to find the b pipe somewhere online? What should i do about the resonator? get a hi flow one? I also have obx headers coming this week so I want everything from the headers back to be fresh And new. Most of, if not all piping under the car is pretty beat up since I live in Pennsylvania, a lot of snow means a lot of salt unfortunately 😠