Which gearbox do I have to buy?

Dear community, I hope that I’m right here – this is my first entry on the forum. If not, please correct me Currently I’m totally lost: 3 weeks ago I bought a Volvo V50 and now I know that it needs a new gearbox. Now my question is: What do I have to buy? At Volvo costs a new 270€, which is why I look for a used or overhauled gearbox. Now to everything I know and what I consider relevant: The chassis number is: YV1MW765262184449 Engine: 1.6D with 109hp Year of manufacture: 03/2006 Gear type (?): MTX75 (5-speed gearbox) From my gearbox I could photograph the white paper – but not everything. When I wiped away the rest of the oil with Aceton was the complete font away. I attached the pictures. The code is: XXXX 7002 YF (The X stands for: I have no idea what a letter is) My problem is also that every hand says something else. Some people would like to say it to me, some great regards to Louis.