So you don’t have the plate yet? Do you have the caps? Where’d you get them from? (If it was another plate-mounted Alps board, then wherever you found them should also have the same little clips and wires).
[You can also harvest some from most plate-mounted Alps boards w/ the same width keys (some Alps switch keyboards use costar-style stabilizers, but not most of them). You can probably find one for about $10-15 shipped on ebay, since you wouldn’t otherwise care about the condition of the keyboard. I’m not sure if there are good sources for just buying the little plastic clips / wires; I bet Matias has some, since they still use those style stabilizers for everything except the spacebar, I believe.]
If you really need, I can probably find some to send to you, but can sometimes be horribly slow about getting to the post office.