Doano about that, but we had the 260 HP V6 2017 CrewCAb 2wd Frontier with which we towed our Casita 17 just fine..but the Fronty just didn't have the power we needed in the western or our own Tennessee mountains for the larger, heavier E21c.
WE just recently traded up to a Nissan Titan XD 400 HP 4x4 Crew Cab and have about 90% increase in torque + ~40% more bed space and 40% more interior room.... Ours is the std "S" model..
set up to seat 6 adults ....bks the front "console" folds up...very few fancy Geegaws, but has AC, 7spd AT, 4x4, PW, Traction Control and trailer hitch + wiring. WE added the Curt brake controller from the Frontier..No problemo so far. Even prefer the std rubber floor covering in lieu of carpet..great and easy to clean up the mud..while camping! Had the front 2 windows dark-tinted to match the rear 3 and added running boards and undercoating. Good to go.
This trip last weekend was our first for the XD..and to be honest, we didn't even know the trailer was behind us most of the time.
Lost a few MPGs, but it sure is nice to be able to leave the AC on and not have to worry about that V6 screaming and straining along in 3rd OR even down in 2nd gear (4500+ RPM)...while hauling up the long hills!!
The Fronty was not getting very good gas MPGs while doing that BTW.
We decided on the beefier Titan XD bks
it has a standard 78" long bed, while most 1/2 ton trucks(including the std Titan 4x4 Crewcab now come w a 66" [short bed].. The XD seems to be a truck set ~between the 1/2 ton range and the real heavy 3/4 tonners..but it sure can haul that 21!!
With the rear seats folded up we can almost have room for an adult to sleep on the back floor..its flat!
WE love it.