I asked Bill if he had the same issue when installing the one he did for the install video and he said the following...Installed mine tonight. More pics can be found in my build thread.
The o2 wires are a bit tighter than stock and with the magnaflow downpipe I replaced out. The front o2 sensor is too tight to even clip the connector back in the bracket beside the rear connection.
*Let me be clear, I'm not displeased. I would suggest looking into the o2 bung locations though, especially the front bung. It would do much better a little further up the pipe.
This is the rear line stretching to reach:
This is a HORRIBLE picture of the front o2 connector dangling since it wont reach to snap back into bracket:
Bung placement. CJPP vs Magnaflow:
Lastly, this is the downstream o2. It gets very close to that heat shield. I recommend pushing down the heat shield for anyone who puts this in.
They were not stretched at all when I installed one on the car in the video, the harness clips in and you can move the clip up the wire to gain additional room