We own a 2016 Jayco 27BHS and pull it with a 2007 F150 in my sig. The trailer weighs 6800 loaded for a 3 day trip. The GVW on the trailer is 8200 lbs. The tongue weight is 760lbs., which I think is a bit light. We have an Eaz E Lift WD setup with a sway control bar. The tow rating on the truck is 7800 lbs., with a payload of 1648 lbs.
I weighed the entire rig and we are under on our max ratings on all measures. The rear axle is close to max (170 lbs.) under.
The old school 5.4L pulls it just fine. I have added a 2nd sway bar as I get a little more wiggle (not sway) out of the trailer on windy days.
Keep in mind we are towing this trailer on the Texas Gulf Coast. If we were towing in the mountains on a regular basis i would want more truck....
Hope this helps...