Trying to find a giant laser-cut train-mounted cannon kit... any help?

[mrgrigson]

Some time ago, I remember one of the laser cut kit folks was noodling around, and they did a sci-fi version of the Heavy Gustav for themselves. I think the finished kit was something like a meter long. I don't believe they ever released it, and I'm not sure I'd lobby for that to happen, but does anyone happen to remember who did that kit, or where there might be pics of it?