Will look at the maps more closely tomorrow, but from what I can see now:
ALoriaCavern2k4-bfix - OLDZ material only.
Ascension-fix - we have even never version but it was taken down for balance issue (excessive downhill spam at the boulder part also loldeemerroom), will need to get to fixing it someday.
Blitzkrieg - it was on the server for a short while ages ago, holy sh!t it was terrible, OLDZ material only.
Calypso - never played this map online, but from what I remember its OLDZ shit material.
CatRaceTrack_V3_NEW - wat idd
Chaos - nope.avi
CrazYrace-v3 - why isnt this shit in OLDZ, dont know, guessing no one had it or no one could be arsed to find it
Damnation_r - Izumo took it down, probably due to balance issues on the map.
Fortress - whatsthisidonteven
Grandcanyon2k4z-fix - dont know, I kinda like the Deja version with all the random stuff placing and secret locations. Makes me want to explore the map more then play it
Guardia-2K4
SPAM AWAY! OLDZ material.
Hole - damn, I have this map, but when I saw how it looks in flyby mode I quited the game
KvW-RaceTown-fix - dont know, I think we have the oldest possible version, and thats the point in OLDZ
Magma(BETA4) - was on server, taken down due to terribad gameplay, could be OLDZ material.
MZ-HighRise - already on, with something like fix that I dont know fixes what.
Osaka - already on.
Pathway-Naive - both versions, with set up freekill traps and vehicle trophies.
Pharao-Raceway-final - already on, both fixed for AS and old shit for OLDZ.
Pyra-b2 - already on, Lego version for RACE and old shit for OLDZ.
Retrieval(BETA2) -
SPAM AWAY! OLDZ material.
RSC-TheTomb - Izumo took it down, probably due to it being quite unpopular.
Scorpionrace - already on, textured and lighted version for RACE and old shit for OLDZ.
SkyRace_Revision - already on, both fixed for AS and old shit for OLDZ.
TarydiumMine - Izumo took it down, probably due to it being quite unpopular.
Utopia - its online, but last obj needs some tweaking as it can get tedious.