Some good name engine builders still say like 500 miles, while others break them in on the dyno similar to that link shows. I have seen folks do it both ways with good results. We broke a buddies 1200whp supra in on the dyno one night. First pull it smoked like a freight train and we all shit our pants. Then after 3 pulls it ran like champ, no smoke and pegged the dyno. :p