1965 Mustangs
Changes from 1964 ½

Exterior:

    1.  14" wheels standard
    2.  improved "crimped" hood after August of 64
    3.  Headlight bezels were not beveled after August of 64
    4.  GT group became available - five-dial instrumentation, disc brakes, larger sway bars, 
         quicker steering ratio, dual exhaust which exited through the rear valance panel, 
         grill mounted fog lights, and special lower body side stripes. 

Under the Hood:

    1.  Alternator charging system
    2.  Smaller horns mounted on radiator support
    3.  New engines - 200 CI 6 cyl., 289 V-8 2V, 289 V-8 4V, 289 V-8 Hi-Po 4V
    4.  Aluminum water pump replaced with Cast-iron on 289 Hi-Po
    5.  six-bolt bell housing on V-8s to improve noise and vibration
    6.  Wider transmission bolt pattern improved vibration and noise levels
    7.  Ford manufactured power steering pump replaced Eaton
    8.  All pulleys were stamped steel

Interior:

    1.  brake light switch moved under dash
    2.  Wall-to-wall carpeting replacing vinyl between rocker panel and sill plates
    3.  Vent knob is unmarked
    4.  Upgrade from two to three-speed fan switch
    5.  All models featured chrome lock buttons
    6.  New door handles starting March 1965)
    7.  Pony interior became available (special seat covers with running horses)
    8.  Interior door panels with integral arm rests and pistol grip door handles
    9.  Five gauge instrument cluster
  10.  Wood grain steering wheel

Trunk:

    1.  Weather tight taillight socket
    2.  improved "J-hook" spare tire hold-down

A new interior option was added, the interior decor group (known as the pony interior), which featured special seat covers with running horses across the back, special interior door panels with integral arm rests and pistol grip door handles, five gauge instrument panel, wood grain steering wheel, and wood grain appliques on the instrument cluster, glove box, and optionally on the center console. Another option introduced in April of 1965 was the GT equipment group. Available only with one of the two four barrel engines, the GT group included five-dial instrumentation, disc brakes, larger sway bars, quicker steering ratio, dual exhaust which exited through the rear valance panel, grill mounted foglights, and special lower body side stripes.