It's a flip safety for the NOS that was an option (in my mind at least). Or safety for the "Spy Hunter" road slick option for those pesky tailgaters. 
'96 Mystique, Zetec, MTX.
---Mods---
Removed both intake resonators and airbox. Installed APC air filter and APC crankcase ventilation filter. Removed exhaust resonator.
Installed XM Satellite Radio. Replaced bad alternator and 175a fusible link...much fun!
Intake plenum---GONE!!!!
My car growls louder than yours.
If I can't buy it, I'll build it...Trust Me!!!!
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