Dave,
That part I have tryed to get. The only way to get the clips is with the Upper Air Baffle Assemble Part #4709403 MSRP $117.00-That's Nuts! What you can do is drill a 1/4 hole through the air hood&baffle just below the stock retainer and use Part #6030441 E-pin [Christmas tree] $1.60 . The E-pins are used [DC vehicles] for holding inner fenders wells to the bodys.
Hope this has helped?