and if so, what O2 sensor is being used for the drivers side? On my 94 the O2 sensor is hitting the bellhousing and will not allow the header to fully bolt down. It seems to be at least couple inches too long. These are stock Bosch sensor. We notched the plate between the clutch and block for it to fit, but it seems like a lot of material to remove on the bellhousing for it to fit.