About 2/3 of the total production. Although I discovered that the full range of build numbers has not been used. The last one mentioned was #138, but early on they assigned groups of numbers to the selling dealers. Some were not ordered with the assigned number as sales fell short at that dealer or the dealer went out of business. Superformance (Hitech Auto, Port Elizabeth,S.A.) decided this was not the way to issue the numbers. They now build on the last running number, but some numbers were never used that were issued early on. As far as Peter Brock knows, there are about 100 cars world wide.