So took the battery trays out today to replace the hold down clips.  In doin so I had to take off the front part of each inner fender splash shield. My question is doe anyone know the part number of the retaining push clips/plastic rivets that are used? I need about 6 of them at the moment.

Should be able to get the fasteners from most body shops. The part number look up books are in the article database.

 

https://mopar1973man.com/cummins/articles.html/24-valve-2nd-generation_50/part-number-lookup-tool-2nd-gen-24v/

 

Blind rivet part no. 34201631.   Jeep Cherokee uses them also.   Look on Amazon.