Here's a table of wheel base and length over all (sorry the formatting is a bit off) that I put together based on 2006 models a while ago.
RCSB RCSTD RCLB ECSB ECSTD ECLB CCSB HDCCSTD HDCCLB
WB 109.4 119.0 133.0 133.9 143.5 157.5 143.5 153.0 167
LOA 194.8 205.0 224.5 220.0 230.2 249.2 230.2 240.0 258.5
WBFt 9.1 9.9 11.1 11.2 12.0 13.1 12.0 12.8 13.9
LOFt 16.2 17.1 18.7 18.3 19.2 20.8 19.2 20.0 21.5
Some of them might be "made up" configurations that I calculated, I don't remember for sure. However, the CC STD and CC LB are legit #s for 2006.