Performance Instruments- Shifter Handle mounted "line lock" activation switch

[1KWIKSIX]

Am looking for the line lock activation switch that was once made / offered by Tom Houser of "Performance Instruments" back in the day.
This activiation switch is mounted inside the RH shifter handle button giving a stealth installation.

If anyone has one or knows where I can obtain one, please let me know. Pics or any literature / information would be greatly appreciated.

I've tried to contact Tom, but without any success.

Thanks,

Dave