Question: What 300-lap super late model stock car automobile race did Gary St. Amant win?

Context paragraphs:
Advance Auto 500: The Advance Auto 500 was a NASCAR Busch Series stock car race held at Martinsville Speedway, in Martinsville, Virginia.  Originally a Late Model race when it began in 1970 as part of the Late Model and Modified Doubleader, it joined the Budweiser Late Model Sportsman touring series in 1982 (the original year), and remained a part of the series through 1994.  Following the 1994 season, both of Martinsville's races, the Miller 500 and the Advance Auto 500, were switched to Late Model Only formats (see ValleyStar Credit Union 300 for details on the Late Model portion of this race).  The Advance Auto 500 served as the final race of the season for the series for ten years, from 1982 through 1991.

CRA Super Series: The CRA Super Series is a Super Late Model stock car racing series owned and operated by the Champion Racing Association.  It is a touring series based in the Midwest United States.  It was formerly known as the Kendall Late Model Series and the Sunoco Super Series.  The series utilizes late model stock cars similar to those used by NASCAR.  Regulations on engine and body are NASCAR legal.  Like NASCAR, the car body designs are based on the Chevrolet Monte Carlo and Chevrolet Impala, Dodge Charger, Ford Fusion, and the Toyota Camry.

IWK 250: The IWK 250 is a 250-lap late model stock car automobile race held annually at the third-mile Riverside International Speedway in James River, Nova Scotia.

Miller 500 (Busch race): The Miller 500 was a NASCAR Busch Series stock car race held at Martinsville Speedway, in Martinsville, Virginia.  It was first held as a Late Model Sportsman and Modified doubleheader in 1970, and in 1982 the Late Model Sportsman feature changed to a touring format for the original 1982 Budweiser Late Model Sportsman season, and stayed as a touring race until 1994.  Following the 1994 season, both of Martinsville's race, the Miller 500 and the Advance Auto 500, were converted to Late Model only races.  The March Late Model race was discontinued at the end of the 1997 season.

St. Amant, Louisiana: St. Amant (or Saint Amant) is an unincorporated community located in Ascension Parish, in the U.S. state of Louisiana.  This community has not been incorporated into a city or town.  It is situated about 25 miles south-east of Baton Rouge.  and 50 miles north west of New Orleans.  It is named after the St. Amant family, some of the early settlers in the region.  The Saint Amant post office has the ZIP code of 70774.

American Canadian Tour: The American Canadian Tour (ACT) is a late model stock car racing series based in the northeastern United States, and Quebec, Canada.  The American Canadian Tour has two different late model divisions: the ACT Late Model Tour, founded in 1986 conducts races in New England and New York, and the La Série ACT (formerly known as Série ACT Castrol Tour), founded in 2005 runs in Quebec, Canada.

Gary St. Amant: Gary Wayne St. Amant (born October 19, 1962) is a former stock car racing driver from Columbus, Ohio.  While he competed in several NASCAR Camping World Truck Series races, his career is most notable for his success in the American Speed Association, winning the National Tour in 1998 and 2000.  When the ASA folded after the 2004 season, he found success in the Hooters Pro Cup Series, winning the Northern Division Championship in 2007.  With St. Amant having won the Snowball Derby and Winchester 400 twice, along with the All American 400 and Snowflake 100 once, he is the only driver in history besides Chase Elliott to have won all four short-track crown jewel events.  He also showed his mentorship to a young Jimmie Johnson in his early ASA days, before his transition to NASCAR.  Johnson has since mentioned his appreciation for the coaching while making history himself in the NASCAR Sprint Cup Series.

Hillbilly 100: The Hillbilly 100 is an annual dirt Super Late Model "Crown Jewel" race held every year on Labor Day weekend.  The Hillbilly Hundred, promoted by famed event promoter Carl Short, is the oldest running super late model event and brings enormous history and tradition to the state of West Virginia.  Started in 1967, the Hillbilly 100 was held at Pennsboro Speedway every year until 1998, when the race was moved to Tyler County Speedway in Middlebourne, West Virginia.  Then in 2010 the race moved to West Virginia Motor Speedway, and once again in 2012 to I-77 Raceway Park up until 2016.  Now the Hillbilly 100 is back at Tyler County Speedway where the 2009 event had a purse in excess of $125,000, with $1,000 to start the feature and $41,000 to win.  As of 2017 the race has a purse of $25,000.

Snowball Derby: The Snowball Derby is a 300-lap super late model stock car automobile race held annually at the half-mile Five Flags Speedway in Pensacola, Florida.  The race has been contested every year since 1968 and is typically run on the first weekend in December, although in some years it has been run on the second weekend.

U.S. Pro Stock/Super Late Model Championship: The U.S. Pro Stock/Super Late Model Championship is a 200 lap super late model race held annually at Seekonk Speedway.  The event is aimed at creating a race similar to the Snowball Derby in New England.

Supporting paragraphs: Gary St. Amant Snowball Derby
Answer: Snowball Derby