Which comes first, the trailer or the hitch system?

Bikeden has correct answer. Find trailer first. Then truck with payload to handle HW, people quantity and their weights, animals, canoe, kayak, orv's, generator, firwiod, crossed toolbox/fuel tank etc. One may find they need 3000 lbs of payload towing a 6-7000 lb trailer as I was, with 4 adult sized teens. I needed a 3500 crew cab to tow a trailer most 15 series trucks could do! Even the smallest of 6cylinders could pull it. Not saying you would be fastest rig on road.....

Marty