Front Springs

Years - 1998-2002
P/N - 12338316-1
Tie Wrap - Yellow
Spring Rate - 954 in/#
Free Length - 13.36"
Coil Diameter - 0.904"
Usage - Standard 2-doors - 10,300/10,800 w/o winch (gassers - 2dr with winch, 4dr Soft Top, 4 dr Hard Top, Wagon)

Years - 1998-2006
P/N - 6005787
Tie Wrap - Red
Spring Rate - 954
Free Length - 14.00
Coil Diameter - 0.925
Usage - Ext. Height 2-door 10,300 w/Winch - all 4 doors w/o winch (gassers - 4dr soft top w/winch, 4dr Hard top w/winch, Wagon w/winch)

Years - 1998-2006
P/N - 6005786
Tie Wrap - Orange
Spring Rate - 1250
Free Length - 13.36
Coil Diameter - 0.980
Usage - All 4-doors 10,300/10,800 - w/winch

Years - 1998-1999
P/N - 12338316-2
Tie - Wrap - Green
Spring Rate - 1728
Coil Diameter - 1.044
Usage - Heavy Duty - 10,800/12,100 & all w/snow plow

Years - 1998-1999
P/N - RCSK18428-1
Tie Wrap - N/A
Spring Rate - 3000
Coil Diameter - 1.088
Usage - X-Heavy Duty 12,100 & Heavy Duty Fire Truck Option 12,100

Years - 2000-2006
P/N - 6011072
Tie Wrap - White
Spring Rate - 1728
Coil Diameter - 1.030
Usage - Heavy Duty - 10,800/12,100 & fire Trucks or w/snow plow

Rear Springs

Years - 1998-2006
P/N - 12342616
Tie Wrap - Gray
Spring Rate - Variable
Coil Diameter - 0.8 / 1.26
Usage - Standard 10,300/10,800 - w/o optional heavy duty equipment

Years - 1998-1999 P/N - 12338316-3
Tie Wrap - Green
Spring Rate - 2108
Coil Diameter - 1.044
Usage - Heavy Duty 10,800 - w/o Rear Heavy Duty Equipment

Years - 1998-2001
P/N - 6006008
Tie Wrap - N/A
Spring Rate - 2300
Coil Diameter - 1.215
Usage - Standard 10,800&1998 Heavy Duty 12,100 or option 10,800

Years - 1999
P/N - RCSK18428-2
Tie Wrap - N/A
Spring Rate - 3000
Coil Diameter - 1.271
Usage - X-Heavy Duty for Fire Trucks - Optional on 12,100

Year - 2000-2006
P/N - 6011073
Tie Wrap - Yellow/Red
Spring Rate - 3000
Coil Diameter - 1.295
Usage - Heavy Duty 12,100

I think the years go back further then whats indicated but regardless something very useful to have...

Scott
'01 HMCO