Bozio brand injectors seem to have a following in this forum.

You can use any 27mm (1-1/16"?) deep thin wall socket. The thinner and cheaper the socket the better. 12 point works better than 6 point unless the return line nipples on all injectors happen to align with the points on the wrench flats. If you use a socket that fits the injector too closely, it will bend the nipples inwards and you'll probably cause a leak bending them back to position.

Torque is 70-80Nm.

Don't forget new injector seals.

The plastic shields around the base of the injectors don't have to be replaced. MB doesn't stock them anymore.

Sixto
93 300SD