Arnolt created a racing team for the Sebring 12-hour race, and in 1955, at their first attempt, the special lightweight cars finished first, second and fourth in the Sports 2000 class, winning the Team Trophy, a feat which was replicated in 1956 and 1960. The following year they took second and third in class. In 1957 the team withdrew after Bob Goldich's fatal accident on the first lap of his first stint in the car co-driven by Wacky Arnolt, while a privately entered Arnolt Bristol finished fifth in class. 1960 brought a final class win, finishing 1st, 2nd and 3rd in class, and placing 14th, 22d and 39th overall.