rearend swap

You need a conversion joint. It's a combination of a 7260 and 7290 series joint. The 7260 yoke measures 2 1/8" inside width and the 7290 yoke measures 2 5/8" inside width. These two are common Mopar joints.

I walked into an Autozone recently and asked for a 7260 and their eyes glazed over. I got the usual questions like, "Does it have air conditioning...". The only way they could identify the proper joint was by the cap size - which I didn't know.

I went to another place and we looked in a book which had listings that indicated the dimensions I noted above. Worse case: go to a driveline shop. They'll know exactly what to give you or order from Mancini.