What type of speaker / build plans

The woofer is a Purifi 6.5" unit and the tweeter an AMT in a wave guide (possibly Mundorf AMT).

Here is a long thread on speakers using the drive unit, closes to the AMT is Purifi's own SPK5 design. You may need the wayback machine to find details of the crossovers though.

Troels Gravesen Purifi 6R would also be close in design - http://www.troelsgravesen.dk/Purifi-6R.htm

These are not cheap drives by the way.