I bought a Ford Posi Carrier for my 99 XLT F-350 with 11,000 miles on it and never installed it. The truck was sold before I got a chance to install it. It will work in any Dana 80 with the correct gear. I'm not sure but I think that would be a 3:73 or higher. I will take best offer or it will go on ebay. Halletts1@chartermi.net Delivery may be possible as I will be in 7-8 states in the next two weeks. __________________