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1964-1973 Mustang Upper Arm Lowering Drill Jig

Lowering the mounting position of the upper control arm to improve the handling of classic Fords has been a common performance modification done since the 1960's, but never with the accuracy and ease that is now possible with our precision laser cut steel drill jig. Previous methods involved drilling pilot holes using light weight, flimsy templates or marks derived from a common ruler leaving a large margin for error.

Laser cut which makes perfect parts every time so measurement errors are a thing of the past. Each drill jig is marked to show correct orientation and simply bolts to the factory mounting location. Heavy gauge material is used to securely guide the full size drill bit so you only drill once for each hole. It's the perfect tool for the do-it-yourselfer and a great time timesaver for shops that perform this modification frequently. aka Shelby Drop

Click on image for larger view. Comes as pictured.


  • '60-'77 Fords/Mercury
  • Must have upper control arm with 3.75" or 4.75" spacing between holes


Precision cut steel drill jig

Part # Description Price Qty Purchase
STUCALDJ6566 1965-66 Mustang Lowering Jig - 3.75" Spacing $29.99/ea
STUCALDJ6770 1967-70 Mustang Lowering Jig - 4.75" Spacing $29.99/ea

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