You need an e-clip, actuator, and tall spacer for a Wico microswitch stick. The e-clip can be had at any hardware store, the tall spacer is the same as a tall spacer for a Perfect 360 joy, Happ part# 50-0337-00. I've also found nylon washers at the hardware store that will fit in that application. As for the actuator, Ponyboy has a bunch of those actuators; in fact, I think he's got the e-clips as well, and he can probably get a P360 spacer, since he distributes Happ parts. He's probably your best bet for a 1-stop solution, and all-new parts, too.
If that doesn't pan out, I can go digging through my random parts, but it might take me a while to get around to it.