Extending O2 Wire for header set up

[Classic11]

Hello all, just installed the Fabspeed RSR headers and sport muffler kit on my 3.2.
Looks like i need to extend the O2 sensor wire quite a bit to get to the new location.
Anybody konw if there is a extension or a longer wire or just splice and make it longer? Anything to be aware of?

[AndrewCologne]

Does your sensor come with that typical old rubber plug?
If yes, then cut the line and enlarge using a simply wire with the same diameter and ... choose crimping for connecting the wire ends no soldering.