How much GT40 Superformance?

the latest release of the Shelby Registry dates from 2008, since it was built many Superformance GT40, do you know how many?
of MK1?
of MK 2?
thank you
it is not much, I thought there were many more, our cars are really rare, if you can have the distribution of the MK1 and MK2 will be perfect,

best regards