Some update: we now have good reasons to think the car has been modified from the original 6.0L and an automatic gearbox to a 7L and Getrag 5speed manual box - we yet did not see any chassis number but it seems that some good work has been done underneath the body too including at least sport adjustable suspension and a 4 x Brembo braking system. We also found the ECU has been completely replaced (see picture) but no identification visible and I did not date to open the box. We also have a traction control (picture too) unit linked to it but I did not try yet...step by step. Did anyone saw this ECU and traction control before ?