Wouldnt be surprised if at some point they came back. Had a small giggle to myself when reading a rotor magazine article (rotor and wing I think) where they were talking about an recent
upgrade to some Bell 212s. They made them more useful and increased the payload/range by removing the two engines and replacing them with a single powerplant of the T53 line.
2007 and we have invented the Huey.
TW