what size truck do i need to tow a 26' trailer

My first fifth-wheel was at 6300# (weighed) and I had a F-150, small v-8 engine at the time. It got me there, bogged down on the roads in No. GA.
Traded it for a Dodge Ram 1500 with the V-8 Magnum and it towed like a boat.

I now have a 26' TT and am towing with a 2500 5.7 Hemi Dodge. Tows like a champ, but will downsize to a 150 or 1500, just a v-8 engine.

Doable.. probably, depends on where you live, where you plan to go, but IMO
a tad short on the power.