All I know about the Citroen gearbox is that the CW/P is apparently unobtanium and the turbo cars push the limits of the gearbox.
Presumably the Esprit crowd have found an answer which is likely to get a Renault gearbox as per the later cars?
Haven't seen a decent close up pic before but I must say, the cam cover gasket arrangement is streets ahead of the earlier 907 / 912 engines.
Always pleasing when the bearings look good – probably a sign the engine has been treated decently.
For new bearings, Bedford ones work . . . with a little finessing.