i do received some info from Proton R3's forum,
they do mentioned to me that F5M222VRZG came from Mitsubishi C98S/C98L model car with powered by 4g92 turbo engine, same ratio with F5M222VRXE gearbox (for 1st-4th gear on 4g93p DOHC) . for the 5th and Final Drive the ratio is the same as F5M222RRGE (4g93p SOHC)
i've used it (bought from half-cut) on my 4g93P, my experience with it, not so cool, yes it has almost-the-same ratio as F5M222VRXE (for 4g93P DOHC's stock engine), but i feel weird/different on the 5th gear, seems like still got 1 more gear left while cruising at 110-140kmh
fuel consumptions for VRZG, from Bkt Jelutong Shah Alam to KAjang via ELITE Highway, RM15-18 per way at 110-120km/h average speed(quite expensive for me) while my-old VRXE only consume RM13-15 for the same route and speed
tq and do correct me if i'm wrong