[IlDucci]

The tools are already made, at least PVR Extractor had a reinsert feature, if the size was right (And it can be perfect with the small hex job I said):



As for working on ripped version or full GD version, I'll have to talk with the guy who asked me for help (I'm working with Ryo Suzuki, from the SegaSaturno forums, but it went missing on the last weeks).