[Kobura]

The metal tangs on my mufflers that hook on the body with rubber grommets fractured from vibration after a couple thousand miles. You may want to have the tangs reinforced with gussets welded near their attachments to the mufflers while you have them removed. I found the removal and installation of the side pipes to be straightforward but somewhat awkward to get at the flange bolts from the open hood. If you have a lift, it may be easier to access the bolts from underneath the car.