gkz

Hello, I've got an Audi A2, 1.6 FSI, BAD engine code and GKZ gearbox code. Can I put in a 2nd hand gearbox with a BAD engine code and GDC gearbox code?? It's also from a Audi A2, 1.6 FSI. I'm told it'll probably be the ratios that are slightly different but wanted check. :) Any help...