im having a problem with my o2 sensor...see i installed some headers on my car and now i cant put the o2 sensor on because the motor mount is blocking it...can i rewire it or somethin or what should i do??? can u help me plzzz

 

A pic would help, but I'll assume the mount you're talking about is just a torque-mount. It's there to keep the engine from rotating too much either way while driving, but doesn't actually support the weight of the engine - meaning you could remove it, install the O2 sensor, and then reinstall the mount... unless I'm misunderstanding your issue.