Alain has just emailed me, he has some severe personal problems but he took the time to tell me this.
He just had an engine rebuilt by a guy who has appaz a very high reputation but 4000 kms later it has seized, also the garagey bloke said that he isn't touching 3 litre V6s any more. So sadly it doesn't look as if he knows anyone he can recommend at the moment.
Here is part of what he said, it makes grim reading.
"Mais, pour un rendez-vous pris en juin pour septembre, il a attaqué le véhicule en février. Après presque 7000€, 4000km plus tard , moteur à nouveau cassé. On ne sais pas encore pourquoi, mais presque plus d'huile moteur, perte de liquide de refroidissement. Je pense moteur serré, bloqué. Alors je peux difficilement le recommander. "
At least your moteur is not bloqué.
Very best of luck mate.