Recently I got stuck on a sandy boat ramp due to the open diff in the back of the Crown Victoria. Decided I would upgrade to a limited slip.
On ebay I found some good deals on 2015-2019 mustang carriers for the 8.8 with low miles priced around $120. After doing some research I found that the only difference is the way the axles are held in the spider gears. IRS uses some sort of clip while the SRA uses the normal c clip. But when I look up pictures of the spider gears, where the clips go, for both rear ends they look the same.

My question here is will the C clips from the SRA axles fit in the spider gears of the IRS carrier?

Also: If the mustang IRS diff won't work do any of you have experience with the Yukon Gear Duragrip? I see mixed reviews online but the specs look pretty good.

Thank you for any responses.

Should be fine, as the C clip is external to the splines, the difference is within the splines. IRS side gears have some of the splines machined away and a slight bevel to them so you can pull the axles out. I went the opposite way, I went with a solid rear axle trac loc in an IRS rear end (1997 Mark VIII). I simply used a honing stone on a dremel to create space for the spring clip and the bevel.

Thank you! I'm ordering tonight and I'll update this page with how it goes.

I am curious to see if this will work, from what I have read in the panther and mustang world the IRS carrier doesn't work in a solid one. Please keep us posted.