Put Up Or Shut Up

Pro Mod, in which teams can run supercharged, alcohol-burning engines or 900ci, nitrous-oxide-sniffing gasoline setups.

Brian Lohnes pits two gasser-style drag racing cars against each other in a heads-up eighth-mile drag race.

Brian Lohnes pits the two best X275 drag racing class cars in the world against each other: the orange, nitrous-fed big-block Mustang of "Mean" Dean Marinis and the supercharged small-block blue Mustang of the famed Bruder Brothers, Rich and Nick.

A 22,000-pound Peterbilt takes on an 18,000-pound Kenworth.

Multi-time Nostalgia Funny Car champion Jason Rupert drives his nitro-burning Camaro against new driver Pete Wittenberg, who's piloting a slingshot-style front engine Top Fuel dragster.

A pair of closely matched but mechanically different dirt track classes battle it out.