Looks like those extensions of the Pacific base sets actually were the cards in the SGA packs.
Pacific #451-465
Pacific Paramount #251-269 (no #264)
Doing some quick analysis of these four sets:
-- Montreal and Philadelphia only have the two Upper Deck cards ... no Pacific or Topps ones
-- Chicago and St. Louis have Topps and Upper Deck cards but no Pacific ones
-- Anaheim, Boston, Buffalo, Calgary, Colorado, Dallas, Edmonton, Florida, Nashville, New Jersey, Ottawa, Pittsburgh, San Jose, Toronto, Vancouver and Washington only have one Pacific card
....so only 8 of the 28 teams (Atlanta, Carolina, Detroit, Los Angeles, NY Islanders, NY Rangers, Phoenix and Tampa Bay) had a full 6-card pack?
* Ed * L8 * Cards in my personal Collection are unavailable *