If the vehicle has a 5th wheel and air over, it is tractor equipped. That means it will pull any trailer with air brakes that was built in the past 75 years. There is no such thing as matching a trailer to a tractor. My first truck tractor was similar to what you describe.

https://picasaweb.google.com/crenwelgeoil/MyFirstTruckTactor#5518103013237507570

I used it to pull a tanker to haul gasoline, a flatbed to haul hay and a grain trailer to haul grain. The rated gcw on it was about 55,000. I later added a drag axle and grossed 80,000.