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

I've done slant 6 swaps in about 3-3.5 hours with only hand tools and jackstands, no lift when I was younger. Most recent one I did was about 4 years ago, pulling the 360 out of my Dart Sport, swapping the torque convertor and going for a test drive in just over 3 hours. I had some advantage in that I have a lift, and had just recently installed the motor, plus I had all the tools immediately at hand. Some would argue it would be quicker to pull the transmission, but I felt it was easier to yank the engine since I could move the headers out of the way instead of having to remove and reinstall them.