HSV Enhanced VN SV20 ?!?

[F/INJ Suicide Machine]

I have a HSV Enhanced VN SV20. Can anyone provide me with some info on build no.'s or what they had? Mine has a whole lot of cool stuff so any info will be much appreciated

 

[Shearer]

Here's some info:

 

[F/INJ Suicide Machine]

Thanks, seems like mine has all the origional options. I am curious about numbers though. Im struggling to even find pictures of an SV 20