What is your fastest time to pull an engine, install another and drive it away?

Fastest was the car in my avatar. Blew my 7 season 440 on the last day of points. Just needed another run in the car to win the championship, didn't need to do anything but make it down the track. two guys pulled the motor out of my power wagon- a near stock 440, two guys pulled the motor out of the car- which was realistically a 15-30 minute job. Don't know how long for sure, but it must have been around an hour or slightly more, got it done before my class was called and won the championship that year.