To find the correct lug pattern, you'll need to consult:
* The owner's manual: This is the best source if you have it.
* A Ford parts catalog for 1965: These are available online or through classic car parts suppliers. You'll need to specify your truck's details.
* The truck's wheel itself: The lug pattern is often stamped on the wheel.
* The vehicle identification number (VIN): This can help determine the specific specifications of the truck.
Without more information about the specific 1965 Ford truck, it's impossible to give a definitive answer.