3.31 to 3.73 LSD

[2014greyford665]

I'm thinking of converting my 2wd 2014 Ford Expedition XL (U1F) rear axle ratio from the 3.31 open-diff to a 3.73 LSD

Which is better to do? equip a Ford Expedition genuine 3.73 LSD rear axle? or put in some aftermarket parts?

Would the parts and conversion cost a lot or its considerable?

And what parts would I need for a genuine 3.73 LSD? or the aftermarket conversion?


Thanks