Hitch Receiver Or Complete Hitch Required?

[Bruces10]

I have a 2006 GX-470 purchased used and want to pull a trailer with boat or motorcycle, etc... There's a bar under the rear bumper which looks as if it has been manufactured such that I just need to install a hitch receiver ($30 and bolt it on, versus installing a complete/separate towing bar ($350...or $700 at the Lexus dealership). I would want to pull up to 3,500 lbs.

Can anyone provide their opinion/advice on this? Thanks.

[David n NKY]

Tagging along. We need to do the same thing. Any suggestions?