Assuming the wheels are machined specifically for a Pantera and are hub-centric you don't need or want lug nuts with a shank. As stated by others, the seat angle and thread engagement are the main concerns. Confirming the seat angle is a good idea. Minimum thread engagement being equal to the thread diameter is valid. Do the wheels have seat inserts? Once the wheel/tire package is mounted on the car and torqued to spec and you drive around a bit, I suggest rechecking the torque after it cools down.
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