There has many instances which problems have occured with installing OBX headers. Some ppl have stated that the headers are about 1.5 inch short. They have solved this problem by switching the front header to the rear.

Someone on the TL board mentioned that the header piece with the OBX Stamped on it is the rear piece....is this true for everyone with OBX headers?

 

naa it seems more like OBX is stamping pieces at random.

 

Yes. Another way to tell is put your collector pipe on the floor and set the header pipes on them, one front and one rear. If they are vertical you have it right, if angled wrong. What I am saying is the flange part that bolts to the engine will be positioned like you are going to bolt them to a wall (for example), they are not tilted! On mine the OBX stamp was on the rear header pipe.

 

The OBX stamp was on the rear header for my install.