'64 1/2 Mustangs
How to Tell the Difference

• If it's a fastback, it isn't a 64 1/2.  Those didn't become available until '65
  
  
• Standard wheel size for 1964 was 13 inch
  
  
• Look at the hood - most have an "unimproved" or uncrimped hood with beveled headlamp bezels
  
  
• Look under the hood for:
  
      1.  Generator charging system - unique to 64
      2.  Large frame-mounted horns behind the radiator
      3.  Horn relay under voltage regulator
      4.  Radiator support with battery cooling vents
      5.  Master cylinder with brake light switch
      6.  hood hinges painted gloss black
      7.  Eaton power steering pump (you will find both an internal and external reservoir,
          depending on whether or not the car was air  conditioned)
      8.  The 289 HiPo had an aluminum water pump
      9.  A number of both 260 and 289 engines had cast-iron water pump pulleys
    10.  The 64 1/2 engines 170 CI 6 cyl., 260 V-8 2V (164 HP), 289 V-8 4V (210 HP)
           and beginning June of 64, a 289 HiPo (271 HP)
    11.  V-8 engines had a 5 bolt bell housing
    12.  early V-8s also had a narrow transmission bolt pattern
  
  
• Interior
  
  1. Some had an "A" on the vent knob, but not all
  2. Cruise-O-Matics were fitted with a smaller shifter handle, but not all of them were produced this way
  3. The 64-1/2 had a one model year only steering wheel.  The slippers are different on 64 1/2
  4. The same is true of 64-1/2 turn signal switch (slippers are different)
  5. The carpet runs across the floor to the rocker panel, finished with a vinyl covering to the sill plates
  6. Non-adjusting passenger seat (Mustangs manufactured before May 8, 1964)
     
     
• Check the trunk for:
   
  1.  Slotted spare tire hold-down
  2.  ratchet lug wrench (not in every case)
  3.  pigtail tail light sockets