OK, pickups are here - and I'm sure they were direct from the Eastwood Company. That means the Ebay seller Yarddoggolfer is one of the guys at Eastwood.
The pickups came with a small Eastwood catalog enclosed in the box:
And they clearly are made for the Hi-Flyer:
These are the style of pickup that mounts to the trim ring, rather than to the body of the bass. In the last photo you can see that the pickup is recessed below the trim ring because it's not mounted.
This is definitely getting more interesting!