|Season||Driver||Number of Races||Entrant|
|1982 CART/PPG Indycar World Series||Al Unser||9||Longhorn Racing|
|1981 CART/PPG Indycar World Series||Al Unser||11||Longhorn Racing|
|1980 CART/PPG Indycar World Series||Al Unser||12||Longhorn Racing|
|1979 SCCA/CART Indycar Championship||Tom Bagley||12||Longhorn Racing|
|1979 SCCA/CART Indycar Championship||Steve Krisiloff||1||Longhorn Racing|
|1979 USAC National Championship||Tom Bagley||1||Longhorn Racing|
|1978 USAC Citicorp Cup National Championship||Cliff Hucul||8||Longhorn Racing|
|1978 USAC Citicorp Cup National Championship||Bubby Jones||1||Longhorn Racing|
|1978 USAC Citicorp Cup National Championship||George Snider||1||Longhorn Racing|
|1977 USAC Citicorp Cup National Championship||George Snider||5||Longhorn Racing|
|1977 USAC Citicorp Cup National Championship||Bubby Jones||1||Longhorn Racing|
|1976 USAC Citicorp Cup National Championship||Jan Opperman||2||Longhorn Racing|
|1976 USAC Citicorp Cup National Championship||George Snider||2||Longhorn Racing|
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