The OEM hitch along with the spare tire mod kit (Witts end I think) let's you fit a 35" spare in the factory location. It's real tight but seems to work (315 1/2 worn bfg AT under mine and barely clears the rod that connects the axle to the frame). Have to go with the Toyota one for the additional arch in the design vs the straight style like the Reese I had originally.My hiker trailer (boxy teardrop) was only around 800 pounds and I now have an A-liner that is closer to 1200 pounds. Oddly, the A liner tows better, indicating aerodynamics may play a bigger role than weight on the highway.
I have a 35" spare under the truck and looking for a different hitch setup. Glad to see your 4 bolt thingymabob held up. I'll probably go that route in the short term and weld in something custom in the long term.