e34m5e34m5

Hi, i am a huge fan of the e34 m5 (the one from ronin), just wondering how many of these we have in nz?? Because im definately buying one when im out of uni and got a real job i remember reading somewhere that only 4 were sold here new... Also, are there any 6 speeds in nz, and how do they compare with the 5 speed (in terms of performance/reliability)?