Answer by taking a quote from the following article:

Richard Charles "Chuck" Bown Jr. (born February 22, 1954) is a former NASCAR champion. His last ride came in 1999. He currently lives with his wife in Asheboro, North Carolina. He is the brother of former fellow NASCAR competitor Jim Bown.

In 1986, Bown returned to NASCAR, running in the Busch Series. His first start came at the Goody's 300, where he started 28th but finished 40th after wrecking his No. 67 Buick early in the race. He made his only other start of the year at the Oxford 250 at Oxford Plains Speedway, where he's started 13th and won his first career Busch race. The following season, Bown ran three races in the No. 7/56 Pontiac, but did not finish a race.  In 1989, Bown ran his first full season in Busch driving the No. 63 Pontiac at Lanier Speedway and at South Boston Speedway. He finished the season with 5 top-5s and 12 top-10s wound up ninth in the championship standings. The following year, Bown won six races and four poles. He had a total of thirteen top-fives and won the Busch Series championship over Jimmy Hensley by 200 points. That same season, he returned to the Cup series, running three races in the No. 97 Pontiac for Tex Powell, his best finish 23rd at the Atlanta Journal 500.  In 1991, Bown won three times and garnered four poles, but dropped 4th in the Busch Series points. He made one Winston Cup start driving Cale Yarborough's No. 66 Pontiac at North Wilkesboro Speedway where he finished 26th. The following season, Bown failed to win a race and had only five top-five finishes, and dropped to eleventh in the standings. In 1993, Bown won his final career pole at Richmond International Raceway and won his final race at Martinsville Speedway. He recorded 5 top-5s and 13 top-10s en route to a fourth-place points finish. He made one Winston Cup start driving the Roulo Brothers' No. 39 Chevrolet at Phoenix, finishing 24th.

what car did he drive?
He made one Winston Cup start driving Cale Yarborough's No. 66 Pontiac at North Wilkesboro Speedway where he finished 26th.