pacesetter o2 extension kit?

I just got my ps lt's and they came with wire and some plastic joints. Will I be fine just using their wire and extending them myself? Or Do I really need the extensions?

I just bought these to save myself some trouble. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=014&sspagename=STRK%3AMEWN%3AIT&viewitem=&item=330137821039&rd=1,1

Good move, cutting, splicing, and extending your factory harnesses is not a good idea.

Good move, cutting, splicing, and extending your factory harnesses is not a good idea.

i did not cut/splice the factory harness, i just cut/splice the o2 sensors themselves, and had no problem, but i felt like doing it right so i bought a set of sensors on here for cheap, and bought some extensions and called it good