Nissan is very strange in their build options... Looks like the only way you can get the 6 speed in a 4 door 4x4 is the SV short box... 4x2 you can have either the KC or CC with 5 speed in the S model but not the 4x4
I shopped for about a year targeting used Toyota extended cabs but never found
one in my price range/acceptable condition. So I switched to Nissan and after a
few weeks, saw one on CL. Grabbed the 2011 KC 4sp 4x4 and have been tickled
silly. This was 2 years ago and I've noted that this combination of features
almost never shows up on CL since. I presume that they're in demand and the
pickings are slim.