copter doctor to quote you..."This is a Great project and will make the 412 a really great machine!"
Surely you are taking the p**s. The 212/412 gives me a living because so much has been shoe horned into what was a great airframe from the 205. If time could be wound back I reckon Bell should have put maximum effort into making that twinpack into a quick change unit.
Target time would be like the Puma, say an engine change in one hour with one man on the engine removal and one on the winch, or am I wishing for too much.