Here one , goto pg 9
http://www.tau.ac.il/jcss/balance/ground.pdf
There were also official Turkish reports and also from Jane.
Mkek is the Turkish coy that licensed producing them which they
called it as FT2000 Panter.
Here one abt Firtina:
http://www.caat.org.uk/publications/countries/turkey-precis-0303.pdf
Subsequently a $4.5 million contract was awarded to
Singapore Technologies for 6 guns, and a separate $2.5
million
contract was awarded for Technical Data Packages.
Basically, the 6 guns are SP variant of FH-2000, and the
Technical Data Packages is the Technical and Production
Specification of those guns which will be eventually installed into
Firtina and Mkek is the same company that will be licensed
producing them too.
In fact, do you know that our Primus SPH could have it's first
export sales to Turkey way before it was officailly
unveiled?!?
In the late 90s before TurKish army has chosen K9 as their new SPH,
Mkek and STK actually presented a 155mm/39cal SPH that was based on
a design from STK to the Turkish army.
When that reports was out then, Primus was not even officially
unveiled, so no one even know what SPH was been offered by Mkek
& STK to the Turkish army becos we dun even have a SPH for
sales, but we do know now.
Anyway, Turkish army rejected it( it was called SP2000 too) becos
they wanted a 52Cal gun, eventually the Turkish army chose the K9
but the gun will be of STK design and licensed produced by
Mkek(that is why they bought the 6 guns and technical packages
reported above)