addendum to the above, they came with matching keys.
So over the last few days I looked things over, took some measurements for my drawer / platform planning and decided I'd go with (6) cap-head allen- or torx-driven thru bolts to attach them to my drawers.
Whipped up a crude jig to support the stripped down latches and marked centers and drilled 6 holes in each for mounting screws / bolts on the final product. Then worked the wicked sharp stamped steel edges with some sanding blocks to make them safe and to better take paint. Weather is nice this week so I can get away with some rattle-can painting.
Didn't like where my center lines put the corner holes so made an adjustment on the fly to keep the holes aligned on each side of the latches.
And my centering punch didn't quite do the job. Both too small of a mark and I started with too fat of a drill bit, so my holes aren't perfectly aligned. Should have used my crappy drill press instead of a hand drill, but it wanders a bit too. Smaller bit would have been better. So I used a step drill bit to enlarge the holes a bit more. I can cheat and better align the bolt heads when I do the final assembly.
Going to use something like this for assembly
Got the latches primed and painted today, nice mid-60s weather and stuff warmed in the sun.
A few days from now when the paint is hard enough I'll re-assemble the lock hardware and set them aside for my drawer build, which ought to happen in January.