Mine's not a real R/T, and if that makes me a poser, so be it
I have added the R/T badges to my truck, front and rear. I did this because I like the looks, but have the need for the 4 doors associated with the crew cab.
To answer the OPs question. It does just snap on to the honey comb grill. I also added a little bit of 3M double sided tape to make it just a little bit more secure, and it also cuts down on the wiggle factor. I purchased mine off of eBay (actually my wife did) I think the seller was Steve White Motors... a Chrysler/ Dodge/ Ram dealer somewhere out west.
I also added the rear R/T badge from the Magnum and Charger (I think it was either '09 or '10 model years). I just thought it looked good, and even the authentic R/T Rams are missing the rear badge.
I have had several people stop me in parking lots of various places, wondering where I was able to find a 4 door R/T. I just smile at 'em, let 'em think for a minute, then I come clean that it's not a true R/T.
That being said. Poser's Unite!!!!!!!!!!!!