I still a 92 300CE differential (104 motor) 3.06 ratio for sale. 92K miles. Good condition. $300.00 plus shipping (weighs 82 lbs). Cheapest way to improve your performance if you have a higher ratio (lower number). This ratio can be found stamped on the back of the housing at the 4:30 oclock position on the rear face parallel to the axles.
Send an email to
bergsma@charter.net if you are interested. Thanks, Craig