Will a mk3 golf gti gearbox fit a mk2 gti gearbox?

No, a Mk3 Golf GTI gearbox will not fit a Mk2 GTI directly. The two models have different gearbox mounting points and designs, which means modifications would be necessary for it to fit. Additionally, the Mk3 features a hydraulic clutch system, while the Mk2 uses a cable-operated system, further complicating compatibility.