I have not found any with the Bigua name on them. I was told they were all changed. If you look closely at the clock in the center, you will see the Detomaso symbol faintly at the 12' position. It was to costly to have them remade so they took a black marker to everyone of them and made it look like a thicker bar.
The abs were on available on the last cars as well as traction control. I believe all 5 speed cars will have the cobra engine with the blue valve covers. The first 100 cars had the early door handles.
I have 2 cars with superchargers. One has a left over qvale race team engine in it. I don't put stock in the values will explode ever, but they are sure cheap reliable fun.