Looked but sorry don't have any pictures of a 67 or 68 console base that is stripped down to just the main body for a four speed car to compare the modifications that are present on the one you shows in your initial post.
As for routing of the wiring for the roof hopefully these pictures will help
Coupe rear mount and wire
Fastback rear mount and wire
Both indicate that the power wire travels up the B pillar on the passenger side to mid point of the rear roof header where it connects to the console wire loom
Hope this helps