don't think an album like that would ever happen. plus, are there any good norteno rappers who could go on a song with a sureno without messin it up by sayin they hate scraps or just plain messin it up? no offense nortenos (i ain't sureno or norteno, i just like the music), but the biggest names in rap have been rapping wit so cal rappers for years (sometimes paying to feature them, not just workin with them)(tupac, easy-e, the game, spider loc, bizzy bone, lil eazy, bad azz, dazz, kurupt, snoop, layzie bone, compton's most wanted is compin out with an album distributed by thump and produced by a sureno rapper.............), the first mexican rapper on mtv was from so cal, mexican rap began in so cal, so cal has more rappers and more variety...................
there is a chance though, that song "chicano life" with sir dyno(norte) and capone(sur) was pretty good. though it probably doesn't count since sir dyno was an ex-wannabe sureno before moving to cali and becoming the godfather of norteno rap.