Good point. I read an interesting article on the development of the grille for the additional cooling for the tow/haul testing.Not to be a Debby downer, but because the JT grill is used (for cooling) and FCA's difficulty in getting the Gladiator to stay cool enough to tow/haul, this is probably the reason they won't offer it in the JT (if they don't)
It's quite the testing process they run them through, I'm sure mostly for warranty issues.
But in my defense, I was thinking more the 5.7L Hemi as it would be less strain on the drivetrain and not steal sales from the 392 JK - I read somewhere this was possibly a reason they wouldn't do it.
I also wonder if the 5.7 would be less challenging for cooling.