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Hurst Tunnel Patch 1964-1966 Ford Mustang

For Tremec TKO 5-speed transmission conversions.

PART# 69530001

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This laser-cut Hurst tunnel patch kit is custom made for 1964-1966 Ford Mustang applications when installing a Tremec TKO 5-speed transmission. The tunnel patch kit is constructed from 18-gauge mild steel, is pre-rolled and tapered to correctly fit the floor pan and comes with pre-drilled holes for welding to the floor pan. The kit also includes a heavy cold rolled steel brace to replace and reinforce the floor bracing of the factory tunnel and includes a CAD drawn template for properly trimming the floor hump for the new transmission. Note: Trimming and fabrication will be necessary when doing a transmission conversion.


  • Custom Designed for 1964-1966 Ford Mustangs
  • Over 60 Years of Conversion Experience
  • Constructed from 18-gauge Mild Steel
  • Includes a CAD drawn Floor Template
  • Simplifies Transmission Conversions
  • Includes a New Floor Brace
  • Pre-rolled and Tapered
  • Laser-cut and Formed


Emission Code5
Item GradePremium Replacement
Length (in)15
Panel PositionTransmission Tunnel
Product TypeFloor Pan Patch Panel
Width (in)11
California Proposition 65 Chemical NameChromium (hexavalent compounds)
California Proposition 65 RequiredYes
Part Number69530001



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

When doing a Tremec TKO 5-speed transmission conversion in 1964-1966 Ford Mustangs.



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