I'm wondering if Drawtite will release a model that is hidden behind the bumper like the one available for gen 3. Do you think there is still enough space behind the bumper on gen 4?ALL 2021s come ready to tow. You just need a Hitch Receiver. UHAHUL is generally a good source for all hitch stuff (for novice people like me). It doesn't look like they have it for 2021 Sienna yet though. Personally, I just ordered a Hitch Receiver from carid.com for about $145. Folks here have encouraged me to try to install it myself which I wouldn't otherwise. Looks like all you have to do is cut a small plastic undercover on one side, and properly torque 6 bolts, with all other common sense precautions like jack stands, a helping hand and tire stops. If you need to wire it, just look up couple of posts above. I am getting hitch for bicycles so I am not going to have to work the wires anytime soon.