Is there any way to remove the necessary O2 sensors for Y-Pipe installation without the sensor removal tool? Also, if using the removal tool is necessary, where can I grab one? Autozone perhaps? I have to be at work today at 2 pm and its 10:45 now, so far I got all 6 14MM bolts loose and I'm working on the 2 cat. converter 12 MM's.

 

You can probably get it with an open-ended wrench but moving space will be highly limited.

You can get the sensor tool at Autozone fairly easy too.

 

unplug the sensors, remove the cat bolts and take them off after you have removed the ypipe, its a joke getting them off with an open wrench after that
the connectors should be right in front of the engine, someone should have a picture in the FAQ's

 

You can rent the tool from autozone, etc. for just a deposit of the price of the piece. return the tool, they return all money. it's as easy as that.