Not sure on the headlight leveling switch plug but on the headlight leveling motors, plugs from a Prius with leveling headlights work from what I have read.
http://connectorexperts.com/i-24506707-headlight-leveling-motor.html
Gigs,
Are you still Thinking about the jdm swap with ecu? I know of a cheaper and faster work around for the chipped key portion as long as you have the origanol chipped key for the jdm ecu.
Pm me if interested.
joe r