I picked up the larger 696 since the 695 would be too narrow to fit a full size spare into. The 696 sits about 1/4" onto the end caps with YAKIMA on them
You do not need the Mighty mounts to install the basket. It attached with T-bolts that slide into the top slot on the roof rack. See PDF image attached at end of post below.
(Link to Full Install PDF document:
http://lib.store.yahoo.net/lib/orsra...ctions-pdf.pdf)
As for the rail caps, it this what you mean?
cheers.