Then a pair of of 3 ton jack stands finally found at Menard's (of all places) for $15. I wanted this style with the through-pin (all the others were the ratchet type that grab on the side onto a bar, hidden from sight).
With a couple tons of hovering metal, I like this simple more robust-looking style where I can clearly see that the locking pin is engaged. I bought the last pair, I may try another store branch to try to get another matching pair in case they are discontinued.
Then I had to make some little shims so they could be used with the jacking pads on the car. Note: if you do this, don't use a soft wood 2x4 like I did (duh). The pads compressed the wood (and the rubber pads of course compress too) and so the sides of the car contacted the wood a bit.
In a previous post a member had mentioned using some thickwalled pipe slightly bent to insert in the jack holes and then rest the pipe in the jackstand cradle. That sounds like a slicker solution, and less prone to slipping off (though you get to worry about the pipe breaking instead
).
If someone is ambitious, I think a similar commercial product would be a decent seller... basically just a set of appropriately bent solid steel pins that were rated to withstand the weight.