Do they make a 'performance' o2 sensor that is shorter in length than the traditional o2 sensor? my cat hangs too low, and i cant fix that unless the o2 sensor is about an inch and a half shorter...thanks in advance

 

I have not heard of short O2 sensors but I have seen guys bend them. And they still continue to work fine. They are bent either with a pipe wrench or in an accident and continue to run fine.
Ps: Dont flame me if yours stops working when you bend it though. Its a risky job. But if you have a bunch from the brakers for a few bucks what have you got to loose trying to bend a few.