Originally a one off model, sales were so successful in the U.S. that by 2005 it was available in four trims: the standard GSR model in Japan, the RS, 5-speed gearbox, and standard wheels (lacking excess components, such as interior map lights, power windows/doors, and radio), the SSL (with a sunroof, trunk mounted subwoofer, and leather seats), and the MR, which came with a revised front limited-slip differential, aluminum MR shift knob, handbrake with carbon fibre handle, 17 inch BBS wheels, aluminum roof, and a 6-speed manual gearbox.