I saw a bullpup M98. I almost vomited. I hope yours looks a lot better.
Speaking of modding - I'm not going to stop, I'm just going to move on to different markers. For instance, after I get this X-Mag, I'm going to look up into picking a Mini-Mag and turn it into a PneuMag (pretty much the most awesome thing in the world).
After that, I'm not sure.. but it'll probably be with a Mag. There's a lot of cool things you can do with them and they're just such an awesome piece of history, it's hard not to buy one when they become available.
Check this out: http://www.zdspb.com/tech/agd/pneumag.html