I know this car is supposed to have o2 sensor(s) but this does not look like one allthough it goes to the lean/rich adjustment on the carb...
it looks like just a steel pipe from the exhaust manifold straight to the carb...
the pics are on the bottom of the page any help will be appreciated.
http://www.cardomain.com/ride/608356
ALSO BlueSteel do you still have exhaust manifolds, I emailed you my address when I took the car off the road, and I never got how much you would charge, that was a long time ago I almost forgot.