Need help ripping models from Dragon Ball Z: Budokai (GCN)

[kantogenz]

Pretty much just the title. I'm trying to rip Goku's models from Budokai 1 in a T-pose or at least a pose that's neutral. It really gets me that Goku's Budokai model is the only one not T-posed, and I'd like to fix that. However, the Gamecube filesystem has a lot of weird, proprietary file types. I'm at a loss. Does anyone know how to go about this? I'd appreciate the help.