FMS "B" springs vs."C" springs
 

what's the differences between the B springs and the C springs?

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1996 Mustang GTS: 5-speed, K&N, removed air silencer, 3.73s, turndowns after stock H-pipe (no mufflers)

The front C springs are 650 lb/inch, the front B springs are 425/530 lb/inch, progressive.

They both lower the car approx. 7/8 inch in the front, and 1/2 inch in the rear. A lot of people cut one coil off the back to even it out.