That's a little bit of water-under-the-bridge advice, don't you think? Plus it seems a little hypocritical in light of
this post... Bigger tires are the one and only way to get clearance under the rear axle. "Most overrated"?

Seriously? Of all the crazy/"stupid" mods, bigger tires get your vote as the most overrated?

Bigger tires, and lift to accomodate them are the 2 easist and first things to do to make a rig better off road. The wheel wells in the GX are ridiculously small. Most everyone has to do "some" modding to get them to work. You need more happy-pills in your life and realize that not everyone wants or needs to build a truck exactly the way you did. Except that you run bigger tires...
I'm with this. It's not (totally or even "very" ) structural. It will for sure look like crap if it's your first welding projct. If you're ok with that, have at it. It is pretty visible for anyone sticking their head down there. I welded on a rear swar bar bracket to the frame on my 100 series with my 110V flux core welder and minimal skill. It looked like ass, but it held, which is what it needed to do. If in doubt, cut, grind, prep, and tack weld yourself, and have someone else put a nicer final bead on it for you. There's a WIDE variety of risk tolerance in this forum, not all of it warranted...