Vintage 1970's-1980's            Pure Power ELECTRO NOX EMISSION CONTROL SYSTEM.   Dated 1975. Manufactured in California.  Other States Might have also offered this system.  I do not know anything about this system or how it is designed to work. Has an RPM Adjuster.   Working Condition is Unknown.   The Control Box Looks Great. Still Has a Nice Label and Markings.  Has the Vacuum Hose and Coil Wire. . NO Cuts or Splices in the wiring. . .. Overall, this is a Great Electro NOX Emission Control System. .EXTREMELY RARE TO FIND..  . Please email with questions.     072912                   I NOW HAVE AN EBAY STORE WITH LOTS OF GREAT ORIGINAL FORD PARTS. CHECK IT OUT...