I came across this on another site this morning
Apparently this is the version 2 VVTF nautilus rebuildable head. Some improvements were made to fit and materials and the wire trapping is easier with this one. It still looks like a tiny space to build within.

Apparently this is the version 2 VVTF nautilus rebuildable head. Some improvements were made to fit and materials and the wire trapping is easier with this one. It still looks like a tiny space to build within.