[Captainfab]

As stated in that thread, the OP there has what is known as progressive, or variable rate springs. Those were available from the factory although what the OP in that thread has likely have settled a bit from it's original height.

Originally Posted by mongocanfly

on these model trucks, are the 3 center coils not supposed to be nearly touching each other?like in this thread pics......http://67-72chevytrucks.com/vboard/s...d.php?t=763522 .....his are spread out...