[spidertri]

car-part.com. Search 1995 318i "carrier". That should bring up a list of all ratios for 95 318 models, pick "Htbk (ti), MT (3.45 ratio), locking". If you see a possibility call/email the yard and request pictures of the housing and tag on the cover. Look for an 'S' stamped on the housing or S3.45 on the tag.