General LSX Automobile Discussion - O2 sensor help?

What are the best sensors to buy out there for our cars? And while im at it, where can I buy the extender for my o2s, I just made these wires longer myself along time ago and since I wanna get new o2s i figured I might as well get the proper extenders for my longtube headers. My car sometime's is throwing codes from the o2's and something just doesnt seem right, like it's running to rich and isnt going as fast as it should be... so im going to get new o2's, there stock ones at 97k anyways..lol

You can get the most expensive O2 sensors on the market, but it still needs a proper tune. I have the same issues and I have swapped O2s twice. The sensors sit so far back, the feedback loop is gonna create a problem no matter what. Difference in resistence feedback in nanoseconds. You can get the extensions from many of the sponsers here, or eBay. But again, it ain't the wires. Cheap gas will also deal wits with the sensors. I hit Houston (e85 as a stage II emissions area) and threw so many codes it scared me!
Good luck.