Make sure to install the flange before welding the parts together because there's no way to get it on there after welding!! Once you install this down pipe section on the car you know how much to trim and at what angle to cut the donut so that it clears everything under the car.
This was the first one I made for my car (below) so it looks a little different. I found that it's easier to install if made the way i made them in the first pics....better fit.
