I don't see any, no... that being said, I could rig something up pretty easily. Also, I hate water bottle cages in cramped frames. I could fix that for nothing, too. I pretty much bastardize all of my bikes anyway. A new fork is less than $50, which would give you eyelets and you could get rid of the boat anchor handlebars by leaving the steerer uncut. The seatpost angle is pretty laid back, I'm sure that would help with bigger guys. Also, upgrading to disks would set you back another few hundred (wheels included, I seriously doubt those are disk hubs).

Still... When you start adding up the cost of disk brakes and wheels, modifications, and so forth, it would add up quickly. This is not the kind of bike I would want to spend a lot of money on. More like use it until it breaks and just repair it with better parts.

Really, it looks like they just modified their existing Atlas-X bike. I'm not complaining, but then again, Sun isn't known for making ultra-versatile bikes. They're built for one thing, and one thing only. I'd still consider it, but it really needs fenders and a few tweaks.