Unfortunately the highest grade you can get the EXT or King cab is the SV with leather or the Pro4X which is 4wd.I originally bought a 2017 Titan Platinum 4x4 CC and about 3 weeks ago traded it for a 2019 Titan XD Midnight 4x4 CC. Honestly the 17 was faster smoother quieter and pulled a boat with no problems. Had virtually zero problems. And it honestly was a pleasure to drive very day. The downside was it has a 5.6" bed with a small payload as I want to put a camper in there it was extremely limiting.
The XD I am getting used to its stiffer, higher off the ground, does have the Cummings diesel in it. But so far the milage is about 4mpg better than the passer.
If I had to do it all.over I'd probably look for a extended cab (not crew cab) Platinum with the long bed gas. The ride is awesome.
Additionally there are more aftermarket parts for the XD than the standard truck and they do have different frames.
Good Luck View attachment 544681 View attachment 544682