Problems with O2 Censors on Obx Header
 

Any one have problems installing OBX headers? I have a 1990 N/A and they where just hard to put on My o2 censor is to big for the hole so i dont know what im going to do HELP PLEASE!

I don't know what your problem is, but all the screw holes are the same size for O2 sensors. Toyota normally used a bolted on flange that the O2 screwed into.

I think he's saying the actual O2 sensor, not the screw holes, I've seen 2 different size O2 sensors off of the 7M motors. One might have been for the cressida, but I'm not sure.

Yeh im talking about the O2 censor it self and my car has two o2 censors one right B4 the Cat and the one in the engine bay that bolted to my exhaust manifold and my header doesnt even have a flange for that 02 censor any sugesstions there? And do you know where i can find an 02 censor