Does anyone have a chart or could indetify what year transmission and transfer case i have out of an XJ? I know its an AW4 and 231, im just curious if its possible to find out the year.

The tag on the t-case may have a date code on it.

engine date code location info can be found erehttp://www.jeep4x4center.com/knowledge-base/index.htm

The Transfer Case assembly # is 5209 9212AB and the Serial # is 121 00 C2

this might helphttp://www.novak-adapt.com/knowledge/np231.htm