They are pretty much part number compatible as far as we could tell. Everything except the badges matched, according to my carpenter's tapemeasure.
I'd love to get my hands on one, especially without too much rust. But the 8" diffs in those generation are not really up to the V8, I've...
The taco was a 1/2 ton in 2012 when the 2nd gen came out (they rebadged the 1st gen tundra) , but it's gotten very fat since then. I haven't played with a tundra to have an opinion on it actually being a 1/2 ton.
Better question is: did they upgrade the frame, diffs, axles and suspension to make it a true 1/2 ton truck? Speaking as a toyota offroad fabricator and mechanic: The running gear on a 3rd gen is wildly under spec before you add a bunch of overland shit onto it.
If the Mass Air Flow Sensor gets wet, even a little splash, it will shut the motor off. There's a ram air intake on the grill, lower passengers side, that ducts air into the air box, and if you get into water too deep will drive water in the same way.
If it started up after you let it sit...
Look for a racing fuel cell, they come in all kinds of shapes, including squares that would fit in the spare tire space.
If I ever add an aux tank or a water tank that's where I'll put it.
e-locker or air locker. Buy once, cry once; and I suspect the parts are not that much difference in price.
I'd think hard about a front locker while he's got it apart too.
Then take the bill to the dealer and beat them up for a credit of the amount a new LSD would have cost them.
I just wired up a dust light to the line for the bed lights. Aside from a fight to get the bed light out (the clip is on the top of the light) it was easy and the circuit has plenty of power for a 2x6 Rigid bar.
Should be fine for rock lights.
I've replaced mine once. I'll be replacing it again when winter is over.
I've replaced the wife's zero times, but she get's a new one in the spring too.
Rock chips turning into cracks...
That covers all of my suggestions. Long run Road, north of Flagpole, and the little towns around Suger Grove WV are also fun to go explore if you want more overlanding and less wheeling.
All of the trails at Flagpole are doable for a stock jeep, or a T4R on 33s, Potts is on my to-do list this...