If you look in the manual for the '99 Legacy (I assume this is true of other years) you find that while the Canadian models came with the child seat anchors, the US models did not. I had a heck of a time finding the part, eventually went to a dealer who had to call Subaru to find out it's the bag looking thing in the picture of the jack assembly (970). Anyway, to save other some time here's the part number:
96031AC070 ANCHOR SET PL
Ended up costing about $13. Just thought I'd share.
96031AC070 ANCHOR SET PL
Ended up costing about $13. Just thought I'd share.