I didn't want to go through the taking a chance ordering a hitch and making sure the 5er I was going to buy was new enough to have chiseled corners. I just bought the Pullrite Superglide 2900 18K hitch and never had to worry. With my 2010 Cardinal I bought, no worries whatsoever.
It cost a bit more, but I negotiated the dealer picking up half the cost of new hitch and install when I bought the new truck.
Les (RVM12), Bonnie and 4 legger Shelby
2019 Ram 1500 Limited 5.7 ltr Hemi, 8 Speed Trans. 4x4 CCSB
FMCA-420438 Good Sam