I read in an article in Car and Driver several years ago that William Favre who was a wealthy european exotic car dealer began building replicas in Geneva using a modified 250GTE 2+2 chassis and with aluminum bodies. The replicas were supposed to be very good as John Surtees was supposed to have checked it out and was impressed. Favre made 8 of them before Enzo found out and put an end to it. Favre died mysteriously several years later and there was talk of ‘shady’deals that got him into trouble. One car was sold in Northern California and another went to New York .