No, it will not be possible. The Wiz and GP2X are hardware different. GP2X uses MMSP2, Wiz using Pollux.
However, it's worth noting that porting open source GP2X emulators (most are open) should be trivial. Since the GP2X and Wiz have the same display resolution and control schemes, many probably don't need anything more than to be recompiled, and the rest likely don't need much actual programming work. There are probably a few that require libraries which may not be available from the start, but if those libs were ported to the GP2X, there is nothing preventing them being ported to the Wiz as well.