So my "new" gauge housing has a clock.  I would like to keep it.  I need a knob to go on the shaft for adjustment.  Anybody know where to get one?  
(1974 chevy C10 with a 1973 gauge housing modified to take a voltmeter instead of an ammeter and a new hole for the fasten seat belts/brake warning light.  (Drill and dremel).  )
Thanks much,
ricky