What does ssl mean? How is it different from the MR edition? Performance difference ?SSL -(Sun, Sound and Leather) Sunroof, trunk mounted subwoofer and leather seatsMR -(Mitsubishi Racing) came with a revised limited-slip front differential, Bilstein shocks, aluminum MR shift knob, handbrake with carbon fiber handle, 17 inch BBS wheels, aluminum roof, and a 6-speed manual gearbox, a rooftop vortex generator, HID headlights, foglights and an an accessory gauge packageSame engine performance, a bit beefier drivetrain on the MR You can find all of that with google thoughOther related question