Table:
text: 1983 IMSA GT Championship season
Schedule
Schedule
Race Length_ Class_ Circuit Date_
Monterey Triple Crown 45 Minutes GTU Laguna Seca Raceway May 1
Monterey Triple Crown 100 Miles GTP/GTO Laguna Seca Raceway May 1
Charlotte Camel GT 500 500km All Charlotte Motor Speedway May 15
Coca-Cola 500 3 Hours All Lime Rock Park May 30
Lumbermen`s 6 Hours 6 Hours All Mid-Ohio Sports Car Course June 19
Paul Revere 250 250 Miles All Daytona International Speedway July 4
Pepsi Grand Prix 500km All Brainerd International Raceway July 10
Ford California Grand Prix 3 Hours All Sears Point Raceway July 24
G.I. Joe`s Grand Prix 3 Hours All Portland International Raceway July 31
Labatt`s GT 6 Hours All Mosport Park August 14

Question: What is the class of the 1983 IMSA GT Championship season in which the Charlotte Camel GT 500 race is held?