[fasbird]

That 6.5 ft Caribou looks pretty good and is the only one I have seen that comes close to fitting the Tundra. I tried a 6.5 Bronco pop top on my 05 Access and all I can say is that I should have bought more camper, should have bought more truck and should have never used the silly happyjacks. Tundra cabs have a much lower roof line than, say, an F-150. Which means it sits up much high in the wind; boy does it ever. And sits up much higher than other centers of gravity, boy does it ever. Sways and wiggles and jumps around with terrible gas mileage if the wind was against me. Suspension much to light to handle the weight shifts. The happyjacks keep the camper on, but dont stop it from pressing against the front of the bed... and bending the hell out of it. The four wheel campers attach through the floor to the bed of the truck and look much more practical. Course a nice one costs like $10K plus and still does not sit down close to the cab roof.

Anyway, loved the truck, sold it and bought a RAV4 and now shopping for a small motor home. My solution, not perfect, but better than constant pucker.
Luck, JMark