Here is how I got it to work.
- First installed passenger side clip from under the car.
- Held up the downpipe with my knee while attaching the clip
- Install driver side clip from above the car.
- I was able to pull the bottom of the pipe towards the drivers side, stretching the passenger side clip. This made it possible to install clip.
- It was hard to get the clamp off
Here is a link to the socket set I have Stanley 97-126 11 Piece 1/2-Inch Drive Metric Deep Impact Socket Set