The All Japan Sports Prototype Championship (Japanese name:全日本スポーツプロトタイプ選手権, abbr:JSPC), formed by the Japanese Automobile Federation, was a domestic championship which took place in
Japan for
Group C and
IMSA GTP prototype cars and also featured cars that were eligible for
touring car racing in its earlier years. Class A and Class B for production cars which were defined by the
FIA (
Group A and
Group B) and the lead category, Class C would be for cars that are similar to
IMSA's Camel Lights and the WEC's C2, whereas Class D was for C1/GTP cars.
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