I have a Bullet 19FBPR, and when I bought it, had a 2015 Tacoma, 6' bed, 4.0L with 6600lb towing capacity. The camper is about 4600. Good to go, right? I loved the Taco, but traded it in for an F150. The Taco would tow ok up hills, and was stable. But the dang thing did so poorly on the interstate, I couldn't deal with it. It needed another gear or two. At 65 mph the gearing was wonky, flipping back and forth between 4th and OD. It lugged in OD and wound out around 4500 rpm in 4th gear.
I actually gained gas mileage in everyday driving with the F150 due to the 3.5 EcoBoost engine (19mpg avg - not towing). Like I said, loved the Tacoma, but it's not the tow vehicle for a TT IMO (unless they improved the gearing)