Hi sorry if this is the wrong place or been spoken about before but I’m after some advice. I have a 1.9tdi 2003 avant b6 Audi 6 speed manual with the AVF engine. I’ve been told my gearbox is on its way out so I was just gunna buy a second hand gear box. I looked at my gearbox code and it’s a GBA the issue is I can’t find GBA gearboxes second hand it’s like gold dust lol. My question is would a FYA gear box fit or do I definitely need to get the GBA one?. Thanks for any help.