Be like us, the Pittsburgh Pirates advised the U.S. Congress yesterday, and you too can be world champions.

Manager Chuck Tanner said it as Sen. John Heinz III (Pittsburgh's own) hosted a sizeable delegation of Pirate "Family" at lunch in the Senate's Dirksen office building: "If you work together as a unit, if you work like the Pirates did, you'll do great things for our country."

World Series MVP Willie Stargell, heart of the family, heartily seconded that motion, but you've heard Pops say over and over how he hopes the Pirate concept of all kinds of folks pulling together can serve as an "example of what can be done in this great country."

After lunch, Heinz shepherded Pirate owners John and Dan Galbreath and Tom Johnson, General Manager Harding Peterson, Tanner, Dolores Stargell, her husband and five other Buc players -- Dave Parker, Phil Garner, Ed Ott, Grant Jackson and Bruce Kison (he looking more Family than free agent) -- to the Senate chamber. There they watched from the gallery as his resolution in their honor breezed around token Baltimore boosting by Maryland's Sen. Charles Mathias, who vowed, "The Birds will fly again in 1980" . . .