If start to figure the small inconsequential's that always pop up, fuel/coolant/oils hoses, buried brake and air system lines, being able to fully clean the inside of the frame once power train is removed, the noted Charge Air Cooler(CAC), Radiator any and probably ALL mounts cushions, repairing the cracked, or absolutely broken or what is found failing after power train is out likely a week to week and a half with a JY replacement. Then have to figure what you find damaged by the Yard goons to fix on that yard engine, what yourself breaks and if the yard engine is actually a worthy install. Could end up a shop/lawn ornament for a few weeks.