Ever seen a transmission dyno'd? Here's DieselSite's Bob Riley testing his transmissions before sending them to customers. He can put the trans through just about any situation simulating real world use. Pretty cool stuff.
For you 7.3L fans out there (who for some reason don't like doing things the easy way, and props to you for that!!). Here's a look under the hood of David Beach's 550 Horsepower #7Tree Super Duty SLEEPER!