extracted from the XJ digest circa:  Tue Aug 17 17:31:07 2004

XJ Control Arm Lenghts
Control Arm Lengths
LIFT 	LCAs				UCAs
HEIGHT
	Decimal	Fraction	Decimal	Fraction
Stock	15.75"	15>"		15.00"	15"
2"	15.92"	16"		14.88"	15"
3"	16.09"	16"		14.92"	15"
4"	16.33"	16 3/8"		15.03"	15"
4="	16.47"	16="		15.11"	15"
5"	16.62"	16 5/8"		15.21"	15<"
6"	16.97"	17"		15.44"	15="
7"	17.36"	17 3/8"		15.74"	15>"
8"	17.81"	17>"		16.09"	16"
9"	18.30"	18<"		16.50"	16<"
10"	18.82"	18>"		16.96"	17"

With stock Control Arm Mounts          With RE Drop Brackets
Lift Height 	LCA 		UCA 		LCA 		UCA
	Stock 	15.75 	15.00 	    N/A
	2" 		16" 		15" 	    	    N/A
	3" 		16" 		15" 	          N/A
	4" 		16.33" 	15" 		15.75 	15"
	4.5" 		16.5" 	15"   	15" 		15"
	5" 		16.6" 	15.25"  	15.25"	15"
	6" 		17" 		15.5" 	16" 		15.5"
	7" 		17.36" 	15.75" 	16" 		15.75"
	8" 		17.75" 	6" 		16.33" 	16"
	9" 		18.25" 	16.25" 	16.6" 	16.25"
	10" 		18.75" 	17" 		17" 		17"

Good General XJ Information:
http://www.jeepsunlimited.com/forums/showthread.php?s=&threadid=272033

Rusty's LCA bushings OEM
http://rustysoffroad.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=830&
Category_Code=sus_xj_par