IMSAGT選手権 IMSA
A now-defunct motorsports series under IMSA. Founded in 1969 and folded in 1999, the GT Championship was the original form of IMSA's main [[sports car]] racing league. The series was succeeded by the [[American Le Mans Series]], which itself is the predecessor of the current [[IMSA SportsCar Championship]]

Several Japanese platforms are notable for their success in this league, including the [[Mazda RX-7 FB|FB RX-7]] and [[Nissan 300ZX (Z32)|Z32 300ZX]].
imsa gt championship