I drive a Stage 4 Viggen with the Koni shocks and springs, polyurethane bushings, steering rack brace, 6-point subframe brace, and rear arb. The Viggen really needed the LSD when it was stock, and desperately needed it with the Stage 4. My transmission needed a rebuild, so it was the appropriate time to upgrade to the Quaife LSD. This LSD completely transforms the car and it no longer handles like a Saab. Around a hard corner, the front tires grip and pull the car into the corner while accelerating. You will be scared to push the car when you first drive it with the LSD, because the limit of the car is so much higher than before. Equally impressive is the massive reduction in torque steer. This LSD is my favorite upgrade so far and is well worth the price of the piece as well as the labor cost of instilation.

Rating: [5 of 5 Stars!]