Theres no lambda on the mk4 tdi, and from a distance that pic looks right for yours.
Doesn't fit the 90.. The 90 has the same wastegated turbo setup as the petrols so has 4 studs rather than 3 and is a completely different shape.Same downpipe fits the 115 and the 130 though and the 150 too and the 90, the 110, the 100 etc etc. You get the idea lol.
If you really want the sound it's the back box you want to remove, best to keep the cat to stop the drone when cruising, doesn't affect the poke anyway.