We asked Mustang Country to make up a list of required parts to convert a car to a Pony Interior. Here's what they came up with. Note the extra components needed to convert a standard '65 interior in a non-GT '65 car.
| Parts Required for Pony Interior Conversion |
| Item | Price |
| Seat upholstery | $225.00 |
| Seat buns (2 @ 59) | 118.00 |
| Kick panel | 24.95 |
| Kick-panel chrome | 29.95 |
| Kick-panel carpet | 15.95 |
| Woodgrain gauge-cluster bezel | 44.95 |
| Woodgrain glovebox door | 89.95 |
| Quarter-trim upholstery (coupe only) | 39.00 |
| Chrome corner cap | 14.95 |
| Door panels | 149.95 |
| Door-panel trim | 119.95 |
| Door-panel clips (30 @ .25) | 7.50 |
| Handcup mounting brackets | 7.90 |
| Door-panel cups | 15.00 |
| Door-panel-cup inserts | 7.90 |
| T-bird-type door handles (2 @ 20) | 40.00 |
| Door-handle escutcheons | 9.95 |
| Door-handle shaft and link assemblies (2 @ 15) | 30.00 |
| Door courtesy lamps (2 @ 30) | 60.00 |
| Wire looms for door lights | 23.95 |
| Screw kit | 8.95 |
| Deluxe steering wheel | 349.00 |
| Steering-wheel center cap | 59.95 |
| Stainless steel-trimmed accelerator pedal | 10.95 |
| Stainless steel brake-pedal trim (auto or manual) | 7.95 |
| Stainless-steel clutch-pedal trim | 8.95 |
| Total for all '66s or '65 GT: $1,511.60 to $1,520.55 |
| Additional Parts Needed for '65 Standard |
| Item | Price |
| Underdash wiring harness | $395.00 |
| Alternator wiring harness | 23.95 |
| Headlight wiring harness | 114.95 |
| Engine-gauge wiring harness | 35.95 |
| Oil sending unit | 19.95 |
| Oil sending-unit extension | 24.95 |
| Used five-dial gauge cluster | 150.00 |
| '66 glovebox latch | 29.95 |
| Total Additional | $794.70 |
| Total for Converting from '65 Standard Interior: $2,306.30 to $2,315.25 |
The door-mounted red-and-white courtesy lights are also part of the Deluxe Interior. Mounted on the far lower edge of the door, they're easily visible when the door is open. The holes for these lights need to be cut into existing doors when converting a car with a standard interior to a Pony Interior. |
Along with the T-bird door handles, these chrome escutcheons are mounted behind the handles. |
A complete Pony Interior door panel also includes these panel cups that allow for a place to pull the door closed with your hand. A special metal bracket behind the door panel provides support. |
The biggest ticket item for an authentic Pony Interior is this beautiful woodgrain steering wheel. Parts operations such as Mustang Country have these in stock. The center cap is sold separately. |
Another visually prominent part of a Pony Interior is the woodgrain glovebox door, which is readily available from most any Mustang parts house. |
All Pony Interior cars in '65 and '66 came with the five-dial gauge cluster, even if the car was a '65 non-GT. All '66 Mustangs also came with these gauges, but the woodgrain bezel is unique to the Pony Interior package. If you're converting a '65 non-GT standard interior to Pony status, you'll need to swap the Falcon-style sweep speedometer gauge cluster to the five-dial type shown here, which also involves modifying the dash to make this version fit. Of all types of '65-'66 Mustangs, '65s with standard interiors are definitely the most involved (see sidebar). All '65 GTs have the five-dial cluster, whether or not they have Pony Interiors. |
Missing from the Pony Interior of our '66 GT fastback subject car are the carpeted kick panels, which have been supplanted for the time being by these panels with speakers. Covered halfway with carpet and trimmed with a chrome strip, an example of these panels is visible in the photo of the convertible interior shown at the beginning of this article. |
Unique to coupes and convertibles is the vinyl quarter-trim upholstery that's shown off the car. Used on the inside quarter-trim panels, it covered the whole panel behind the window crank. Although used in all convertibles, the panel was covered only in coupes with Pony Interiors. Fastbacks have a unique setup, so no quarter-trim upholstery was used. |