Here are the SHIPPING & CURB weightes on the GC SRT-8 JEEPS that chrysler has issued. I had fleet mang i no look up the 09/10 invoices to get them as i had the 06/07/08.
SHIPPING WT....CURB WT
2010 - 4635......4788
2009 - 4666......4819 the 09 & 08 have diff shipping wt but same curb wt
2008 - 4694......4819 never did find out why.
2007 - 4697......4850
2006 - 4697......4850

This is all i could find out. The cherokee web sites have some of the curb wt listed diff.