I have seen, without emp and not using the imperial city set that gives you 6k of each stat when you are in imperial city with 10k telvar, a mag sorc hit 60k+ for mag. I have seen 70k+ health builds on a blazplar and with Stam the max is around 50k, they just don't have the percentage amps for max stats mag builds do.
The MadHessian or something similar used to make builds pushing one ressource, regen or damage to the top some time ago. I remember him to get 100k health in one of his videos, but only with ayleid well buff and on a nightblade. But max health sets were nerfed a while ago, so that much health isnt possible anymore.
Without imperial physique, I've hit 59k mag on my sorc. Not the best build though.
Minalan owes me a beer.
PC EU Megaserver
Minie Mo - Stam/Magblade - DC
Woody Ron - Stamplar - DC
Aidee - Magsorc - DC
Notadorf - Stamsorc - DC
Khattman Doo - Stamblade - Relegated to Crafter, cos AD.