quite a few models, chances are its got 100mm shafts as its a late 1.8 model, so you'll want MK2 1.8 8v carb/gti or a mk2 16v box with a 16v clutch kit. mk3 2.0 8v will also fit, again with a MK2 16v clutch kit.
obv later cab ones, and also later scirocco. you'll want to measure the box flanges though to make sure they're definitly 100mm before you buy.
you can swap shafts or flanges to convert either way, but extra hassle you could probably do without!
