Hi dani.
The only way of getting any G1000 drum kits into the T2 would be for you to actually sample each of the drum sounds and save them as WAV's. You would then have to load these individual WAV's into the T2's elements and map each drum sound to a different key. It would take a very long time and to be honest I don't see why anyone would want to go to this length when the T2's drum sounds are already far better than the G1000's, but that's only my opinion and I'm sure many people still appreciate the drum kits on the G1000, which were fantastic for their time and are still very useable today.
If you already have a T2 I'd recommend editing one of the internal drum kits you like and then saving it out as a custom kit. You can change loads of parameters and give the kit either more bite to it/life/ambience etc..
Remember the T2 is NOT a sampler, it only offers sample playback.