Based on these photos, it looks like the adapter works for both patterns and is currently set up in the 4.75 pattern with the existing PINs. Now I just have to figure out which backspacing is best for a 15" wheel using these adapters to get the most wheel well fill and right stance.
The setup on my ERA 472 car pictured below is PERFECT to me. Perfect stance and wheel/tire fill. These are the 6 PIN wheels though, so I don't know if the above adapters using similarly BS'd wheels would stick too far out?
