advice on hard sided, short bed truck camper with Onan

From what I know older 3/4 ton trucks with small turning radius don't exist.
Other issue is that camper AC is not only extra weight, but also 1 foot of extra height and I assume that is important factor.
So if we are talking only occasional use, I would get truck to camper window seal and use truck AC for camper cooling.
I did that in 120F heat when my build-in generator show a fist.
That brings the point that Toyota/Nissan camper combo might better suit for the situation.