What 320d do you have? E46 or E90 as the E46 used the Garrett and the E90 (some i think) used a Hitachi or Mitsubishi (Japanese made) turbo. Turbo Direct in Isando (i think) are the best people to get your Garrett turbo from as they are the (sole) importers. Got my E39 530d turbo about four years ago for about R10 500 from them. Need the exact type and corresponding production number(s) on your turbo before they will supply.