The V-GT should have a long cage so be sure to try the big chainring/big rear cog combination (but not when you're actually riding) to check chain length and, like Unworthy1 said, be prepared to add a link or two. The loose headset bearing 'gotcha' has gotten me a time or two and the best way I've found so far to deal with 'em is to grab a strong magnet (a cow-magnet or the like) and stick it to the lower headtube race before I pull anything apart. It may not keep ALL the bearings from hitting the ground, but at least you won't go kicking them all over the place while you go looking for a magnet to pick 'em up with . An old towel under the headset area would probably help keep the escapees under control too, but I never manage to think of that until it's too late.