skyjacker coil specs.

[jovibuilt]

I found this and thought it might be of use.
Skyjacker

part#----------free length---spring rate

F580 8" GAS spring ----26" 420#
F585 8" DSL spring ----28" 470#
F560 6" GAS spring ----24" 410#

179 9" 79 F150 ---------23" 550#
176 6" -------------------21" 452#

188 8" 80-96 F150------22" 560#
186 6"--------------------20" 623#

136 6" Ranger-----------19" 435#
138 8" -------------------21" 430#

TJ60F 6" 97-06 jeep----22" 182#
TJ80F 8" ----------------22.5" 227

JC80F 8" 84-01 Cherokee 23" 235#
JC60F 6" --------------------22" 230#

 

[alwaysFlOoReD]

Yes, it is.
Thanks,
Richard