servo and ABS are likely to be the same. The bora will have the 288mm setup whereas the 1.6 will run the 280mm setup.
The 288mm setup will allow you to fit the Anni/TT/S3 312mm setup with a carrier change later down the line if desired

If you're changing all that you might as well just drop the subframe taking all the hubs, etc with you and transfer the lot over including a thicker ARB