I still do not think that is the correct trans for a mustang. Shifter bosses should be further twords the end of the tailshaft. I will check on mine tonight and repost. I would also sent the seller an Email asking if the tag is on the side. If you can get those #'s its all you need. It will also tell you weather its a close ratio or wide ratio toploader. Depending on engine config./gearing/ usage it makes a difference. I an running a wide ratio with 3:50 gears and a 4V C.