the 510 and 200SX. Many drivers would cut their teeth in this series such as Don Devendorf, of Electramotive fame, Jim Downing, of Kudzu, and Bobby Rahal. The final season was run in 1984 before it was replaced by the IMSA Showroom Stock class the following year, while retaining its sponsor until 1988. As with most now-defunct racing classes, there are revival races run for this category and the SCCA sanctions events for mostly-stock and all-stock cars. American Challenge The American Challenge (in full, Kelly American Challenge), otherwise abbreviated as AAC was a category for US-built cars and throughout the series, it was always run as a support race to the premier GT series. Starting in 1977, the series ran until 1989. In 1992, the premier GTO category was renamed to GTS due to sponsor reasons, and rather than leaving the GTO category redundant, the title was reallocated to the former American Challenge cars. As a result, they would be run alongside GTS cars. This series started the careers of Irv Hoerr, Kenny Irwin Jr., Patty Moise, Clay Young, Lyn St. James and Paul Gentilozzi. IMSA Renault Cup The Renault Cup was a one-make racing series that ran between 1982 and 1985. There was an East Coast (1982–1985) and West Coast series (1983–1985) as well as an overall championship. The series began with the Renault Le Car for two seasons on the East Coast until its discontinuation in the US. The last two seasons, the East Coast Series ran the Renault Encore. The West Coast Series started after the first successful year on the East Coast, but ran the Renault Alliance which had just been introduced. The genesis of the series was an association of drivers, Associated Road Racers (ARR), founded by Steve Coleman of Raleigh, North Carolina. The association's objective was to start an inexpensive but competitive series with large car counts. The main prerequisite requirement was a series that would allow drivers who had regular jobs and a life to compete with at least a chance to win the championship without having to travel coast to coast, as was the case with other similar series such as the VW Bilstein Cup. The preference was to have a roughly ten-race schedule, with each driver's best six finishes counting toward the Championship. ARR's members were mostly Showroom Stock racers from the Southeast and Northeast Sports Car Club of America (SCCA)