Automatic Transmission Bolt-In-Kit Pedal Support with Booster for 65-66 Mustang

Automatic Transmission Bolt-In Kit for 1965-66 Mustang

This kit is designed for 1965-66 Mustangs with automatic transmissions and includes essential components for a power brake conversion. It’s also perfect for those considering a future manual transmission swap.

Included in the Kit:

• Custom MustangSteve Power Brake Pedal with revised ratio for improved feel and function

• Custom Pedal Support with sealed pivot shaft bearings

• New 9" Booster

• Detailed Installation Instructions

• 1-Year Warranty on the booster
   Instructions
   Firewall Template

Key Features:

1. Revised Pedal Ratio: Provides less pedal travel and a modern braking feel (2" travel with front discs, ~1" with 4-wheel discs).

2. Additional Firewall Bracing: Eliminates firewall fatigue and cracking around the booster mount.

3. 9" Diameter Booster: Fox Mustang booster that resists fade under repeated stops, plus replacement parts are easily available.

4. Factory Fit and Appearance: Fits better than the original '65-66 booster and offers better performance.

5. Dual Bowl Master Cylinder Compatibility: No clearance issues, unlike when you used the original '65-66 boosters with dual bowl master cylinders.

Special Features for Potential Future Manual Transmission Swap:

• Sealed Bearing Shaft and adjustable clutch pedal stop provisions for an easy manual transmission conversion later on if desired. Just add the CK165-P cable kit (Hyperlink) for the full setup. (insert CLICK HERE FOR MORE INFORMATION hyperlink)

Frequently Asked Questions:

• Will it fit my 4-wheel disc brakes?
  Yes, the kit fits any combination of drum or disc brakes, and the instructions specify the required master cylinder.

• What about Falcon and Ranchero?
  With extra work, the kit can be adapted to fit these models. You’ll need to weld an extra piece to the brake pedal for proper pedal pin relocation. 

• Will it fit a 351W with Heddman headers?
  The kit clears short tube headers easily, although the header MAY need to be removed during installation.

Why won’t it fit my original manual transmission?
The clutch actuation rod comes through the firewall where one of the booster studs must attach. However, if you have a T5 or TKX transmission with a MustangSteve cable-actuated clutch kit, it will fit without issues.