There have been two iterations of the bike rack. The first was a typical rear hanging set that I bought at Mountai Equipment Coop. It worked fine but when I upgraded to the duck tail I had to change.
The second version included mt old Thule roof rack and some other bike rack stuff from a friend. I took some of the bits from his old rack and bolted them to my Thule rack. I wanted to be able to remove them so that I could also use the rack for carrying plywood, track tires ... or whatever.
Both have worked just fine.