I stand corrected. When I was buying my 2019 I had looked at the numbers. I felt as though the XL was 13" longer. But verifying the data again there is still a 20.5" difference in length, although the length of both short wheel base and long wheel base has grown since 2003.
2019 data for overall length;
LWB: 224.4"
SWB: 203.9"
I believe I was mixing up the WHEELBASE as the 2019 has a difference of 14" between short wheel base.
2019 data for wheel base length;
LWB: 130"
SWB: 116"
Once again I do stand corrected. I'm not sure where I was getting the 13" figure from as it relates to nothing.
By the way for S&G's the 2021+ models aren't quite as different from one another. The long wheel base barely grows by 0.8" but the short wheel base grows by 6.1".
2021 data for overall length;
LWB: 225.2"
SWB: 210"
2021 data for wheel base length;
LWB: 134.1"
SWB: 120.9"
And for even more, here's some data from the 2014 lineup. The wheel base figures are exactly identical to the 2015-2020 model year but overall length varies ever so slightly.
2014 data for overall length;
LWB: 222.4"
SWB: 202"
2014 data for wheel base length;
LWB: 130"
SWB: 116"