Do you know what failed for sure on your VF29? It would seem very strange that the 29 and both 34's would fail in the same fashion as they have nothing in common, but the car. Are you able to tell if both VF34's are from the same manufacturing lot? It would possibly make some sense if the turbo's are experiencing an intermittent oil starvation, but the stock turbo should suffer the same fait after enough usage. Maybe you should sell me your VF29 after it is rebuilt and you should keep yours stock.