Print original carriage for DaVinci 2.0 Duo

Hey,
I'm replacing the original carriage with one that supports two e3d V6 hotends,but want the new carriage to use the original bearings and clamps for the belt. I tried looking for a 3d model of the original carriage to modify the top with no luck.
Are there 3d models to replace a Davinci duo carriage?
Can 3d printed bearings replace the original metal ones? Will it wear down?