Headers are a bit close in some areas, so yeah, they are a challenge.
O2 sensor is the same in Late Model E30's, I have one from an M42 318 in mine now, late "I" should be the same. Will plug right in. easy money.
as for your fan stub, if the water pump is used, REPLACE IT. gets rid of 2 problems at once, the stub will be gone, and you have piece of mind that the water pump is working, and the cooling passages are (fairly) clear
Comment