Is it possible to have a permanent locked diff on a series 2a?

Yes, it is possible to have a permanent locked differential on a Series 2A Land Rover, but it requires modifications. Typically, this involves installing a locking differential or using a spool, which locks the two wheels on an axle together. However, permanent locking can lead to increased tire wear and may affect handling, especially on hard surfaces. It's essential to consider how the vehicle will be used before making such modifications.