Andrew,
The build of 600-650 per year is a little different to what I was told by Greg Goodall.
While watching the racing at Zandvoort and waiting for his Viper to arrive he told me that F18 had been selling 500-600 per year but he doubts if 200 F18 had been sold globally in the last year.
This makes it look like the bottom has fallen out of the F18 market.
Now I don't know if this statement is right or not but I assumed Greg would know what he was talking about.