I posted this once before, but I'll repost the pics.
On our Lexi I replaced the lightweight class 3 hitch with a class 5 heavy duty hitch, not for the extra towing capacity, but for the strength.
Bought the Roadmaster heavy duty dual 2" receiver. Bought a Curt Spare Tire Mount for 2" receivers.
Here's what everything looks like. Its rock solid, super strong, and easy to access the spare (which I'll change myself), and still allows me to tow our Subaru.