Im gonna throw out something here that I seem to remember when I was restoring my 74 Challenger and had a 71 R/T as a parts car. I used and still have the hood from the 71 on my car and I recall the hood bumpers being in a different spot from the 71 to the 74, maybe due to the change in front end configurations changing to a fiberglass in 72 from the all steel fronts in 70-71. Both my hoods are/were the R/T style.