Those G-Stories cds and GUN cds aren't available anywhere. You can probably find them online, like ebay or somethin but they're really hard to find. You best bet is to hunt someone down who has them and buy them off them.
LOOK UNDER THE TRADES & DEALS FORUM, ON PAGE 4 THERE'S THIS GUY FROM GERMANY WHO HAS A BIG ASS LIST OF NORTENO RAP FOR SALE OR TRADE, HE EVEN HAS 2 G.U.N. CDS.