This pictures shows the bearings and connector pin as it sits in the rear frame. The neck will get sandwiched inbetween the bearings plates and bolted in place with 12 M2 x 12mm shcs that clamp the bearing assembly and 3 M2 x 6mm shcs that bolt the flange part of the bearing plate to the neck. The connector pin is held in place by 8 M2 x 8 shcs.
Once the neck is attached to the rear frame it will be very hard to see these features.
