I know this has sort of died off, but I recently got in contact with a firm in the UKicon that can build you an EM-2, but there's a slight problem. The price that I was quoted was for the EM-2 was £12,000 - £15,000 - and yes, you can get a car cheaper than that! The firm I was telling you about is D & B Militaria. The two videos to have a look at are below:

- - history and disassembly
- - firing

Hope this helps guys!