What was catalog spec stem back then?
Not that I give a rats about catalog, just curious to know what a typical Fat of that era would have come with in the stem department.
I do love the references you make to the 90s you in your choices! Especially as you say you're not riding it, so really you could have anything you want on it, as long as it looked right.
I respect that level of commitment to a plan and ideal!
Personally I preferred the ATAC to the Ringle, but now I'm racking my brains for another option...
If you couldn't find just the right thing in black, a silver (or ti) stem would still look nice, too, I think. If only because it would still match the seatpost, which is a silver and black mix, as well as the crankset, for the same reason. The bars are black, after all.