I flew the Bell204B (lycoming engine) and the Augusta Bell 204A (rollsroyce engine) in Iran in the early seventies. The AB204A was based in the mountains for oil exploration (top rig helipad was 12,000 feet) and the Bell 204B (on floats), I flew in the Persian Gulf.
Not a lot of time, about 1,000 hours but a quality aircraft, a derivitave of the HUEY, I believe