The 60 amp internally regulated alternator can be used on 61-77 Standard Beetles, 71-79 Super Beetles, 60-71 Type 2 Bus models and 73-74 Things. The wiring for the alternator has to be modified as this alternator is internally regulated. 1966 and earlier models that are still 6-volt will require a different stand, backing plate and pulley as the 6 volt units are not compatible with the alternator. 1967 and later models that use a generator may have to swap the stand as the stock generator stand can not be used with the an alternator. If you are converting a car that currently has a generator over to an alternator, consider one of our alternator conversion kits which include an internally regulated alternator, a new alternator stand, alternator strap and 3 piece backing plate kit. This alternator is internally regulated!• If your VW has an externally regulated alternator, it will not be reused and your wiring must be modified.• If your VW has a generator, the original voltage regulator for it must be removed and the wiring for it must be modified. AC903933 BP12v 60a