No, a manual transmission 1966 Mustang should generally
not be towed on a tow dolly. Tow dollies only support two wheels, leaving the drive wheels on the ground. This can damage the transmission because the driveshaft is still turning, even though the engine isn't running. The lack of lubrication while the transmission is turning can quickly cause serious damage.
For a manual transmission car, a flatbed tow truck is the recommended method. This keeps all wheels off the ground and prevents any internal damage.
