You can get them at Napa - they're just standard size sheet metal nuts. The Napa part number and a picture of the nuts and packaging are in this thread.
https://board.moparts.org/ubbthreads/show...=10#Post7214636I bought a package a few years back for my Cuda, and had a bunch left over - there were 30 or 40 in the package. I just sent off a set recently, but I should still have enough left to send you a set. It only takes a stamp and envelope to send them, and I've got more of the Forever Stamps tucked away than I'll ever use, so it really doesn't cost me anything to send you a set. PM me your mailing address and I can send you a set if you're interested.