Class 3 is good up to 5000# and 500# tongue weight.
I have an Explorer with a Class 2 (soon to be a Class 3) and a 4 Runner with a Class 3. I use the 4 Runner for my boat perhaps once a week, weighs about 1600#, I have no problems.

I can't imagine a Morgan weighs more than 24-2500#. Class 3 should be fine on your Explorer should be fine

My problem lies in reconciling my gross habits with my net income.
- Errol Flynn