They are just pulling $4000 out of the air. It does make a little more torque then the gas v6 gas but in a 1/4 mile they are similar with the gas having more HP and lighter weight. Also diesel gets 29 while the gas now gets 25 (16% better) which is great until you swing by the gas station and find diesel costs 27% more then gas. Maybe it will last longer, the Cummins does but this ain't no Cummins, maybe it will have higher resale but that depends more on how the above works out. A ford 6.0 diesel as an example is much less reliable and higher maintenance costs then their 5.4 gas although neither is a gem.
