A friend of mine had a sport with a broken box. He could not find a replacement. In the end he fitted one from a 6n2 Polo gti. The ratios where a little different on 1st and 2nd the rest where ok
I just looked up a 2000 Sport on Autotrader, that is fitted with a ETB coded 085 box. ETKA lists a few other gearboxes with the same part number that would fit:
DXJ, FFL, FHX, FHZ
All of these have the VW part number 085 300 053 RX and has the final drive ratio of 62/16.